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Restricted Stock Awards - Allocations and Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense     $ 93,000    
Retention bonuses in escrow         $ 84,000
Employee service share-based compensation, tax benefit from compensation expense $ 0 $ 0 0 $ 0  
Employee service share-based compensation, allocation of recognized period costs, capitalized amount 0 0 0 0  
Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense 27,000 38,000 $ 147,000 (21,000)  
Stock issued during period, shares, share-based compensation, gross (in shares)     170,000    
Unrecognized stock-based compensation expense 247,000   $ 247,000    
Weighted average period for amortization of unrecognized stock-based compensation     9 months 22 days    
Time-based Restricted Stock Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized stock-based compensation expense 92,000   $ 92,000    
Performance-based Restricted Stock Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized stock-based compensation expense 155,000   $ 155,000    
Share-based compensation awards, term from grant to expiration     10 years    
Additional Paid-in Capital          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Reversal of stock-based compensation expense       88,000  
Additional Paid-in Capital | Unvested Awards, Forfeited          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Reversal of stock-based compensation expense       26,000  
Additional Paid-in Capital | Performance-based Awards, Revised Estimates          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Reversal of stock-based compensation expense       62,000  
Cost of revenue | Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense 2,000 2,000 $ 4,000 (20,000)  
Research and development | Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense 1,000 1,000 2,000 (4,000)  
Sales and marketing | Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense 0 2,000 0 (29,000)  
General and administrative | Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation expense $ 24,000 $ 33,000 $ 141,000 $ 32,000  
Shares Withheld and Repurchased | Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares withheld and repurchased to satisfy tax obligation (in shares)     25,000    
Minimum statutory tax withholding requirements     $ 13,000