Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended				12 Months Ended		12 Months Ended						24 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 State [Member]	Dec. 31, 2013 Foreign [Member]	Dec. 31, 2013 Federal [Member]	Dec. 31, 2013 Federal [Member] American Taxpayer Relief Act [Member]	Dec. 31, 2013 Federal AMT [Member]	Dec. 31, 2013 Switzerland [Member]	Dec. 31, 2012 Switzerland [Member]	Dec. 31, 2011 Switzerland [Member]	Dec. 31, 2013 Minimum [Member] State [Member]	Dec. 31, 2013 Maximum [Member] State [Member]	Dec. 31, 2013 Maximum [Member] Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%	35.00%
Deferred Tax Assets, Valuation Allowance	$ 38,644,000	$ 34,347,000	$ 28,354,000	$ 26,557,000
Discrete Tax Benefit related to reversal of uncertain tax positions from expiration of statute of limitations							39,000,000
Decrease in balance as a result of a lapse of the applicable statues of limitations	1,300,000	900,000	2,100,000												10,000,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense		1,900,000	200,000
Income tax benefit from reinstatement of US federal research tax credit	5,044,000	0	2,006,000					2,400,000
Operating loss carry forwards					85,300,000	96,400,000
Operating loss carryforwards, expiration date													Jan. 01, 2014	Jan. 01, 2031
State net operating loss carry forwards	8,800,000
Tax credit carryovers					29,800,000		5,900,000		2,700,000
Year that federal tax credits expire							Jan. 01, 2031
Tax credit expiration					will not expire				will not expire
Gross unrecognized tax benefits including interest and penalties	24,200,000
Accrued potential interest related to unrecognized tax benefits	1,500,000	7,100,000
Discrete net tax benefit related to the release of tax reserves	(5,600,000)
Federal income taxes not provided on undistributed earnings of non-U.S. subsidiaries	77,500,000
Tax savings due to reduction in tax rate										$ 1,500,000	$ 1,100,000	$ 700,000
Increase in diluted earnings per share										$ 0.014	$ 0.009	$ 0.006
Benefits from a tax ruling										The Company's operations in Switzerland is subject to a reduced tax rate under the Switzerland tax holiday which requires various thresholds of investment and employment in Switzerland.
Additional period for renewal for investment and employment in foreign country										effective through the end of 2018
More Likely Than Not Threshold Recognition of Uncertain Tax Position	50.00%