Income Taxes - Schedule of Effective Income Tax Rate Reconciliation for Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Statutory U.S. federal income tax rate	$ 6,658	$ 2,978	$ 4,360
State taxes, net of U.S. federal benefit	395	521	1,439
Foreign rate differential, including withholding taxes	(805)	(1,934)	2,386
Charges related to U.S. Government resolutions	2,050
Valuation allowances, net	6,149	10,952	8,672
Change in estimate on compensation expenses	(2,151)
Italian subsidiary intangible asset	(1,477)	(2,076)	(2,546)
Change of intention for foreign earnings	1,300
Domestic manufacturing deduction		(469)	(377)
Unrecognized tax benefits, net of settlements	3,049	406	1,370
Other, net	359	471	896
Income tax expense	$ 15,527	$ 10,849	$ 16,200
Statutory U.S. federal income tax rate	35.00%	35.00%	35.00%
State taxes, net of U.S. federal benefit	2.10%	6.10%	11.60%
Foreign rate differential, including withholding taxes	(4.20%)	(22.70%)	19.10%
Charges related to U.S. Government resolutions	10.80%
Valuation allowances, net	32.30%	128.70%	69.60%
Change in estimate on compensation expenses	(11.30%)
Italian subsidiary intangible asset	(7.80%)	(24.40%)	(20.40%)
Change of intention for foreign earnings	6.80%
Domestic manufacturing deduction		(5.50%)	(3.00%)
Unrecognized tax benefits, net of settlements	16.00%	4.80%	11.00%
Other, net	1.90%	5.50%	7.20%
Income tax expense/effective rate	81.60%	127.50%	130.10%