Income Taxes - Additional Information (Detail) In Thousands, unless otherwise specified	12 Months Ended							12 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2013 2015 [Member] USD ($)	Dec. 31, 2013 2023 [Member] USD ($)	Dec. 31, 2013 Intellectual Property [Member] USD ($)	Dec. 31, 2012 Intellectual Property [Member] USD ($)	Dec. 31, 2013 Foreign Subsidiary [Member] USD ($)	Dec. 31, 2013 Foreign Subsidiary [Member] EUR (€)	Dec. 31, 2013 Foreign Subsidiary [Member] Intercompany Dividend [Member]
Operating Loss Carryforwards [Line Items]
Intercompany dividend	$ 30,752							$ 30,752	€ 22,600
Statutory tax rate	35.00%	34.00%	34.00%
Long-term deferred tax assets	6,334	2,565
Current deferred tax liabilities	726	543
Exchange rate										1.36
Unremitted foreign earnings available for distribution	46,012
Deferred tax liability	380
US dividend income, net of foreign tax credit	212
Amount of Unremitted foreign earnings permanently invested	50,398
U.S. net operating loss carryforwards	10,586
U.S. tax deductions for employee stock option gains	9,741
Amount of stock option tax benefit credited to additional paid-in capital.	3,318
U.S. foreign tax credit	5,058
Foreign tax credit carryforwards expire amount				944	4,114
Foreign NOL carryforwards	5,093
Other Foreign Deductible carryforwards	3,898
Expiry Date of other deductible carryforwards	2016-2020
Valuation allowance for deferred tax assets								2,399
Net increase (decrease) change in the valuation allowance	115	196	(5,625)
Tax benefit reserve	$ 2,399	$ 2,284				$ 560	$ 560