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Other Comprehensive (Loss) Income - Summary of Other Comprehensive Income (Loss) and Tax Impact (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]        
Net unrealized gain on available-for-sale securities, net of income taxes $ 11 $ (94) $ 162 $ 249
Net unrealized (loss) gain on interest rate swaps, net of income taxes 11 247 82 (516)
Foreign currency translation (6) (3) (11) (24)
Total other comprehensive income (loss) $ 16 $ 150 $ 233 $ (291)