Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Net deferred tax liabilities	$ 3,174,000	$ 2,645,000
Net deferred tax assets	144,000	7,562,000
Change in valuation allowance	5,200,000
Federal net operating loss, valuation allowances released		72,600,000
Federal net operating loss, deferred tax benefit		36,600,000
Foreign tax credits carry forwards, deferred tax asset valuation allowances released	6,600,000
U.S. Federal
Income Taxes [Line Items]
Net deferred tax liabilities	2,500,000
Net deferred tax assets		7,600,000
International
Income Taxes [Line Items]
Net deferred tax liabilities	500,000	2,700,000
Tax credit carry forwards	$ 30,400,000
Tax credit carry forwards, expiration year	2023