Income Taxes - Schedule of Income Tax Provision (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 4,957	$ 3,429	$ 4,672
State	892	753	947
Foreign	3,191	1,944	1,624
Current Income Tax Expense (Benefit), Total	9,040	6,126	7,243
Deferred:
Federal	(2,794)	(3,012)	(3,033)
State	(409)	(563)	(367)
Foreign	(547)	87	(706)
Deferred income tax expense (benefit)	(3,750)	(3,488)	(4,106)
Income tax provision from continuing operations	$ 5,290	$ 2,638	$ 3,137