Schedule II - Valuation and Qualifying Accounts (Detail) - Provision for Doubtful Account [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning Balance	$ 621	$ 223	$ 650
Provision for Bad Debts	(85)	686	24
Chargeoffs	0	(293)	(429)
Foreign Currency Translation	(1)	5	(22)
Ending Balance	$ 535	$ 621	$ 223