Income Taxes - Income Tax Provision for Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ (118)	$ 1,166
State	56	73
Foreign	1,611	839
Current income tax provision	1,549	2,078
Deferred:
Federal	2,244	(10,881)
State	(217)	(2,189)
Foreign	(422)	3,350
(Decrease) increase in valuation allowance	(1,046)	7,910
Deferred income tax provision (benefit)	559	(1,810)
Total income tax provision	$ 2,108	$ 268