Commitments and Contingencies - Additional Information (Detail) - USD ($)		12 Months Ended
	Jan. 13, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loss Contingencies [Line Items]
Aggregate rent expense under operating leases		$ 3,384,000	$ 2,998,000	$ 3,061,000
Indemnification liability		0
Inventories [Member]
Loss Contingencies [Line Items]
Inventory purchase obligations		$ 19,134,000
Office of Foreign Assets Control [Member]
Loss Contingencies [Line Items]
Transaction period under review	5 years
Potential monetary penalties accrued			$ 900,000
Putative Class Action Complaint [Member]
Loss Contingencies [Line Items]
Loss contingency, Lawsuit filing date		July 28, 2015
Loss contingency, Name of defendants		Naming VASCO and certain of its current and former executive
Derivative Complaint [Member]
Loss Contingencies [Line Items]
Loss contingency, Lawsuit filing date		October 9, 2015
Loss contingency, Name of defendants		VASCO's Board of Directors and certain of its current and former executive officers