Income Taxes - Additional Information (Detail) - USD ($)		12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Line Items]
U.S. federal corporate income tax rate		35.00%
Deferred income taxes on unremitted earnings	$ 6,111,000	$ 6,111,000	$ 5,502,000
Unremitted earnings	77,600,000	77,600,000
Unrecognized deferred tax liability on foreign subsidiary earnings	$ 2,900,000	2,900,000
Federal and state loss carryforward	2020
Foreign net operating loss carryforwards	$ 123,000,000	123,000,000
Remaining foreign net operating loss carryforwards	$ 800,000	800,000
Foreign net operating loss carryforwards expiry period	2017
Tax credit carryforwards relating to domestic and foreign jurisdiction	$ 21,900,000	21,900,000
Valuation allowance	31,362,000	31,362,000	18,020,000
Potential penalties and interest on unrecognized tax benefits	(300,000)	(300,000)	800,000
Potential penalties and interest		3,100,000	3,500,000
Reasonably possible decrease in unrecognized tax benefits within next 12 months	2,700,000	2,700,000
India [Member]
Income Taxes [Line Items]
Income tax credit carryforward	$ 1,200,000	1,200,000
Tax credit carryforward expiration period of India operation	2020
2020 [Member]
Income Taxes [Line Items]
Income tax credit carryforward	$ 1,100,000	1,100,000
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Operating loss carryforwards	57,600,000	57,600,000
Foreign [Member]
Income Taxes [Line Items]
Operating loss carryforwards	122,200,000	122,200,000
Valuation allowance	31,400,000	31,400,000	18,000,000
Foreign net operating loss carryforwards	29,800,000	29,800,000
Domestic [Member]
Income Taxes [Line Items]
Tax credit carryforwards relating to domestic and foreign jurisdiction	$ 19,400,000	19,400,000
Tax credit carryforward expiration period	2017
Domestic [Member] | 2022 [Member]
Income Taxes [Line Items]
Tax credit carryforwards relating to domestic and foreign jurisdiction	$ 1,300,000	$ 1,300,000
Tax credit carryforward expiration period	2022
US Federal Income Tax Authority [Member]
Income Taxes [Line Items]
Income tax returns are currently in audit		December 31, 2009 through 2013
New York State Income Tax Authority [Member]
Income Taxes [Line Items]
Income tax returns are currently in audit		December 31, 2011 through 2014
California State Income Tax Authority [Member]
Income Taxes [Line Items]
Income tax returns are currently in audit		December 31, 2001 through 2007 and December 31, 2012 through 2013
Canadian Subsidiary [Member]
Income Taxes [Line Items]
Deferred income taxes on unremitted earnings	$ 6,100,000	$ 6,100,000	$ 5,500,000
Foreign Subsidiary [Member]
Income Taxes [Line Items]
Deferred income taxes on unremitted earnings	$ 0	$ 0