Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Changes in Accumulated Other Comprehensive Income, Net of Income Taxes (Detail)

v3.5.0.2
Stockholders' Equity - Changes in Accumulated Other Comprehensive Income, Net of Income Taxes (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     $ 457  
Other comprehensive income before reclassifications     1,184  
Amounts reclassified from accumulated other comprehensive income     (102)  
Total other comprehensive (loss) income $ (59) $ 290 1,082 $ 112
Ending balance 1,539   1,539  
Unrealized gains and (losses) of available-for-sale securities [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     (568)  
Other comprehensive income before reclassifications     1,152  
Amounts reclassified from accumulated other comprehensive income     (102)  
Total other comprehensive (loss) income     1,050  
Ending balance 482   482  
Foreign currency translation [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     1,025  
Other comprehensive income before reclassifications     32  
Amounts reclassified from accumulated other comprehensive income     0  
Total other comprehensive (loss) income     32  
Ending balance $ 1,057   $ 1,057