Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Valuation allowance	$ 26,329,000	$ 29,561,000
Deferred income taxes, undistributed foreign earnings	5,700,000	3,700,000
Impact of repatriation, net of foreign tax credits	0	0
Unrecognized tax benefits, impact on effective tax rate	500,000	900,000	$ 1,300,000
Accrued interest and penalties	200,000	2,500,000	2,800,000
Increase (decrease) in income tax expense	(2,300,000)	$ (300,000)	$ (300,000)
Unrecognized tax benefits, gross	300,000
Foreign Countries
Income Taxes [Line Items]
Net operating loss carryforwards, foreign	$ 27,900,000
Net operating loss carry forwards expiring in and beyond the stated year	expire in 2016 and later
California enterprise zone
Income Taxes [Line Items]
California enterprise zone tax credits	$ 4,300,000
Tax credit carry forwards expiring in and beyond the stated year	expire in 2023
Foreign Countries
Income Taxes [Line Items]
Valuation allowance	$ 24,500,000
California Enterprise Zone | California enterprise zone
Income Taxes [Line Items]
Valuation allowance	$ 1,800,000