Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details Textual)

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Commitments and Contingencies (Details Textual) (USD $)
 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2013
Sale of Conference Plus Inc [Member]
Mar. 31, 2012
Sale of Conference Plus Inc [Member]
Dec. 31, 2012
Cns Asset Sale [Member]
Sep. 30, 2012
Cns Asset Sale [Member]
Mar. 31, 2012
Cns Asset Sale [Member]
Mar. 31, 2013
Aurora lease [Member]
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Mar. 31, 2012
Aurora lease [Member]
Mar. 31, 2013
Regina Canada lease [Member]
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Loss Contingencies [Line Items]                        
Area of Real Estate Property                   185,000   2,500
Lease Expiration Date                   Sep. 30, 2017   Oct. 31, 2017
Payments for Rent                   $ 2,000,000    
Percent rent increase every other year                   2.00%    
Deferred Rent Credit, Noncurrent                   551,000 665,000  
Deferred Rent Credit, Current                   114,000 94,000  
Operating Leases, Rent Expense, Net   2,300,000 2,200,000 2,000,000                
Operating Leases, Income Statement, Sublease Revenue   100,000 400,000                  
Loss Contingency Accrual, at Carrying Value   1,700,000 800,000                  
Indemnification Claims Related to Discontinued Operations         1,700,000 400,000            
Loss Contingency, Loss in Period 900,000       1,300,000     500,000        
Litigation Settlement, Expense             900,000          
Loss Contingency, Estimate of Possible Loss                 400,000      
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High   3,500,000                    
Fair Value Of Contingent Consideration Liability After Offset Of Working Capital Adjustment And Indemnification Claim   $ 2,300,000