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Stock-Based Compensation (Details Textual) (USD $)
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12 Months Ended | 1 Months Ended | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Mar. 31, 2014
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Mar. 31, 2013
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Mar. 31, 2012
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Mar. 31, 2014
2004 Stock Incentive Plan [Member]
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Mar. 31, 2013
2004 Stock Incentive Plan [Member]
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Mar. 31, 2012
2004 Stock Incentive Plan [Member]
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Mar. 31, 2014
2004 Stock Incentive Plan [Member]
Stock Options [Member]
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Mar. 31, 2013
2004 Stock Incentive Plan [Member]
Stock Options [Member]
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Mar. 31, 2012
2004 Stock Incentive Plan [Member]
Stock Options [Member]
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Mar. 31, 2014
2004 Stock Incentive Plan [Member]
Stock Options [Member]
Minimum [Member]
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Mar. 31, 2014
2004 Stock Incentive Plan [Member]
Stock Options [Member]
Maximum [Member]
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Mar. 31, 2014
2004 Stock Incentive Plan [Member]
Restricted Stock [Member]
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Mar. 31, 2013
2004 Stock Incentive Plan [Member]
Restricted Stock [Member]
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Mar. 31, 2012
2004 Stock Incentive Plan [Member]
Restricted Stock [Member]
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Mar. 31, 2014
2004 Stock Incentive Plan [Member]
Restricted Stock Units (RSUs) [Member]
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Mar. 31, 2013
2004 Stock Incentive Plan [Member]
Restricted Stock Units (RSUs) [Member]
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Mar. 31, 2012
2004 Stock Incentive Plan [Member]
Restricted Stock Units (RSUs) [Member]
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Mar. 31, 2014
2004 Stock Incentive Plan [Member]
Performance Shares [Member]
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Mar. 31, 2013
2004 Stock Incentive Plan [Member]
Performance Shares [Member]
|
Mar. 31, 2014
2004 Stock Incentive Plan [Member]
Performance Shares [Member]
Minimum [Member]
|
Mar. 31, 2014
2004 Stock Incentive Plan [Member]
Performance Shares [Member]
Maximum [Member]
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Mar. 31, 2014
2004 Stock Incentive Plan [Member]
Performance Shares [Member]
Scenario, Actual [Member]
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Mar. 31, 2012
Subsidiary Issuer [Member]
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May 31, 2014
Subsequent Event [Member]
2004 Stock Incentive Plan [Member]
Performance Shares [Member]
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| Share-based Compensation [Abstract] | ||||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 3,131,192 | |||||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||||||||||||||||
| Vesting schedule of equal annual installments over four years | 4 years | 4 years | 4 years | |||||||||||||||||||||
| Stock Option Contractual Life from Grant Date | 7 years | 10 years | ||||||||||||||||||||||
| Allocated Share-based Compensation Expense | $ 1,871,000 | $ 1,407,000 | $ 1,201,000 | $ 200,000 | $ 200,000 | $ 300,000 | $ 500,000 | $ 600,000 | $ 500,000 | $ 900,000 | $ 600,000 | $ 300,000 | $ 300,000 | $ 0 | ||||||||||
| Proceeds from stock options exercised | 1,677,000 | 87,000 | 1,684,000 | |||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value | 1,300,000 | 200,000 | 1,300,000 | |||||||||||||||||||||
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized | 600,000 | 300,000 | 4,000,000 | 400,000 | ||||||||||||||||||||
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition | 2 years 11 months 9 days | 2 years 3 months 26 days | 3 years 2 months 27 days | 2 years 1 month 6 days | ||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 90,000 | 70,000 | 70,000 | 1,182,000 | 530,000 | 500,000 | 285,000 | |||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | 700,000 | 800,000 | 100,000 | 500,000 | 300,000 | 500,000 | 700,000 | |||||||||||||||||
| Potential PSU attainment range | 0.00% | 200.00% | 94.00% | |||||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 25.00% | |||||||||||||||||||||||
| Repurchase of Subsidiary Stock Options | $ 117,000 | $ 117,000 | ||||||||||||||||||||||