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 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     $ 457  
Other comprehensive income before reclassifications     1,235  
Amounts reclassified from accumulated other comprehensive income     (94)  
Total other comprehensive income $ 414 $ (539) 1,141 $ (178)
Ending balance 1,598   1,598  
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     1,200  
Amounts reclassified from accumulated other comprehensive income     (94)  
Total other comprehensive income     1,106  
Ending balance 538   538  
Foreign currency translation [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     1,025  
Other comprehensive income before reclassifications     35  
Amounts reclassified from accumulated other comprehensive income     0  
Total other comprehensive income     35  
Ending balance $ 1,060   $ 1,060