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Acquisition - Additional Information (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Aug. 06, 2014
USD ($)
shareholder
$ / shares
shares
Jul. 30, 2014
shares
Dec. 31, 2015
USD ($)
$ / shares
Dec. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
$ / shares
Dec. 31, 2014
USD ($)
Jun. 30, 2015
USD ($)
$ / shares
Business Acquisition [Line Items]              
Common stock, par value | $ / shares     $ 0.001   $ 0.001   $ 0.001
Goodwill     $ 13,186,000   $ 13,186,000   $ 13,186,000
Amortization expense     695,000 $ 695,000 $ 1,390,000 $ 1,120,000  
Exony Limited              
Business Acquisition [Line Items]              
Business acquisition, shares | shares 1,209,308            
Common stock, par value | $ / shares $ 0.001            
Issuance of common stock in connection with business acquisition $ 8,020,000            
Purchase agreement date         Aug. 06, 2014    
Aggregate cash consideration $ 8,130,000            
Business Acquisition Escrow Portion 15.00%            
Number of Shareholders With Option Rights | shareholder 2            
Other purchase consideration, value of stock issuable to two shareholders $ 299,000            
Other purchase consideration, shares of stock issuable to two shareholders | shares 45,119 45,119          
Other purchase consideration, cash paid to two shareholders $ 341,000            
Acquisition cost 844,000            
Increase (decrease) in goodwill             $ (44,000)
Goodwill $ 8,306,000            
Amortization expense         $ 3,901,000    
Business combination, revenues recognized     2,900,000 2,300,000 5,600,000 3,800,000  
Business combination, net income (loss)     1,200,000 $ (1,200,000) $ 2,400,000 $ (1,900,000)  
Exony Limited | Lease One              
Business Acquisition [Line Items]              
Term of lease         5 years    
Annual lease payment     260,000   $ 260,000    
Exony Limited | Lease Two              
Business Acquisition [Line Items]              
Term of lease         2 years    
Annual lease payment     $ 91,000   $ 91,000