Quarterly report pursuant to Section 13 or 15(d)

Compensatory Plan Obligations (Details)

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Compensatory Plan Obligations (Details) - USD ($)
Jul. 21, 2015
Jun. 30, 2015
Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]      
Accrued severance and retention costs, current portion   $ 1,408,000 $ 0
Retention Plan [Member] | Employee Severance [Member]      
Restructuring Cost and Reserve [Line Items]      
Maximum cash bonuses, severance payments and related benefit premiums   1,161,000  
Chief Financial Officer [Member]      
Restructuring Cost and Reserve [Line Items]      
Compensation arrangement, cash payment   138,000  
Deferred Compensation Arrangement with Individual, Severance Payable Amount   179,000  
Accrued severance and retention costs, current portion   335,000  
Research and Development, and Selling, General, and Administrative Expense | Retention Plan [Member] | Employee Severance [Member]      
Restructuring Cost and Reserve [Line Items]      
Research and development and selling, general and administrative expense   165,000  
Discontinued Operations, Disposed of by Sale [Member] | Subsequent Event | Services Business [Member] | Employee Severance [Member]      
Restructuring Cost and Reserve [Line Items]      
Incentive payment $ 215,000    
Severance payments $ 814,000    
Discontinued Operations, Held-for-sale [Member] | Services Business [Member] | Employee Severance [Member]      
Restructuring Cost and Reserve [Line Items]      
Accrued severance and retention costs   999,000  
Accrued severance and retention costs, current portion   908,000  
Accrued severance and retention costs, net of current portion   $ 91,000