Long-Term Debt - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended
	Oct. 31, 2011	Dec. 31, 2013
Debt Instrument [Line Items]
Interest rate		1.00%
Promissory note payable period		2013-11
Imputed interest rate used to discount		2.00%
Revolving loan
Debt Instrument [Line Items]
Credit agreement, maximum borrowing amount	$ 30,000,000
Revolving loan | Minimum
Debt Instrument [Line Items]
Interest rate on revolving loan, percentage added to Libor		0.75%
Commitment fee		0.10%
Revolving loan | Maximum
Debt Instrument [Line Items]
Interest rate on revolving loan, percentage added to Libor		1.75%
Commitment fee		0.25%
Credit Agreement Amendment
Debt Instrument [Line Items]
Credit agreement, maximum borrowing amount	40,000,000
Percentage of stock of non-U.S. subsidiaries pledged	65.00%
Term loan
Debt Instrument [Line Items]
Quarterly installments payment	500,000
Quarterly installments payment starting date		Dec. 01, 2011
Libor-based variable interest rate of term loan		2.20%
Effective fixed rate on term loan		2.90%
Credit Facility Term One | Credit Agreement Amendment
Debt Instrument [Line Items]
Credit agreement, increase in maximum borrowing amount	10,000,000
Period of credit agreement (in years)	5 years
Credit Facility Term Two | Credit Agreement Amendment
Debt Instrument [Line Items]
Credit agreement, increase in maximum borrowing amount	$ 30,000,000
Period of credit agreement (in years)	5 years