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Income Taxes (Details Textual) (USD $)
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3 Months Ended | 12 Months Ended | 12 Months Ended | ||||||||||||
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Dec. 31, 2012
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Mar. 31, 2012
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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2020
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Mar. 31, 2013
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Mar. 31, 2012
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Mar. 31, 2011
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Mar. 31, 2013
Federal [Member]
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Mar. 31, 2013
State and Local Jurisdiction [Member]
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Mar. 31, 2012
CNS and CPI sale [Member]
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Mar. 31, 2023
Minimum [Member]
Federal [Member]
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Mar. 31, 2013
Minimum [Member]
State and Local Jurisdiction [Member]
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Mar. 31, 2013
Maximum [Member]
State and Local Jurisdiction [Member]
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| Income Tax Contingency [Line Items] | |||||||||||||||
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | $ 900,000 | $ 1,000,000 | $ 900,000 | ||||||||||||
| Valuation Allowance, Deferred Tax Asset, Change in Amount | 34,000,000 | 60,800,000 | |||||||||||||
| Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions | 0 | (8,000) | 700,000 | ||||||||||||
| Gain on CNS asset sale | 0 | 0 | 46,000 | 31,608,000 | 31,654,000 | 64,500,000 | |||||||||
| Tax Credit Carryforward, Amount | 4,100,000 | ||||||||||||||
| Operating Loss Carryforwards | 73,800,000 | 5,300,000 | |||||||||||||
| Other Tax Carryforward, Expiration Dates | 2020-03-31 | ||||||||||||||
| Operating Loss Carryforwards, Expiration Dates | 2023 | 5 | 20 | ||||||||||||
| Deferred Tax Assets, Valuation Allowance | 2,253,000 | 36,285,000 | 2,253,000 | (1,700,000) | |||||||||||
| Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities | 0 | (2,101,000) | |||||||||||||
| federal tax rate on deferreds | 35.00% | 35.00% | 34.00% | ||||||||||||
| Income Tax Discrete Item | 300,000 | 600,000 | |||||||||||||
| Tax benefits related to stock-based compensation | 61,000 | ||||||||||||||
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | 0 | 14,000 | 0 | ||||||||||||
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | $ 0 | $ 0 | $ 0 | ||||||||||||
| X | ||||||||||
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- Definition
Tax benefit associated with any equity-based compensation plan other than an employee stock ownership plan (ESOP). The tax benefit results from the deduction by the entity on its tax return for an award of stock that exceeds the cumulative compensation cost for common stock or preferred stock recognized for financial reporting. Includes any resulting tax benefit that exceeds the previously recognized deferred tax asset (excess tax benefits). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The expiration date of each operating loss carryforward included in total operating loss carryforwards, or the applicable range of such expiration dates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
State the expiration dates of the tax credit carryforward. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the change in the period in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
federal tax rate on deferreds No definition available.
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| X | ||||||||||
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- Definition
Income tax discrete item. No definition available.
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