Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Line Items]
Deferred Tax Assets, current net	$ 31,400,000	$ 28,400,000
Deferred Tax Liabilities, current net	600,000	400,000
Deferred Tax Assets, long-term net	22,795,000	21,166,000
Deferred Tax Liabilities, long-term net	0	0
Gross unrecognized tax benefits	18,345,000	15,824,000	13,804,000
Decrease in gross unrecognized tax benefits due to settlements of outstanding audits and the expiration of the statutes of limitation	2,900,000
Long term uncertain tax positions	15,400,000	15,700,000
Unrecognized tax benefits, accrued interest and penalties	4,800,000	3,800,000
Total amount of interest and penalties recognized	1,500,000	1,000,000
Repatriated amount from foreign subsidiaries	32,600,000
Accumulated undistributed earnings of non-U.S. subsidiaries that were indefinitely invested	41,300,000
Estimated U.S. income tax liability that would be payable if accumulated undistributed earnings of non-U.S. subsidiaries were not indefinitely reinvested	9,700,000
State and Local Jurisdiction
Income Taxes [Line Items]
Operating loss carryforwards	139,900,000
State and Local Jurisdiction | Expire within one to five years
Income Taxes [Line Items]
Operating loss carryforwards	5,000,000
State and Local Jurisdiction | Expire within one to five years | Minimum
Income Taxes [Line Items]
Operating loss carryforwards expiration period	1 year
State and Local Jurisdiction | Expire within one to five years | Maximum
Income Taxes [Line Items]
Operating loss carryforwards expiration period	5 years
State and Local Jurisdiction | Expire within six to fifteen years
Income Taxes [Line Items]
Operating loss carryforwards	114,200,000
State and Local Jurisdiction | Expire within six to fifteen years | Minimum
Income Taxes [Line Items]
Operating loss carryforwards expiration period	6 years
State and Local Jurisdiction | Expire within six to fifteen years | Maximum
Income Taxes [Line Items]
Operating loss carryforwards expiration period	15 years
State and Local Jurisdiction | Expire within sixteen to twenty year
Income Taxes [Line Items]
Operating loss carryforwards	20,700,000
State and Local Jurisdiction | Expire within sixteen to twenty year | Minimum
Income Taxes [Line Items]
Operating loss carryforwards expiration period	16 years
State and Local Jurisdiction | Expire within sixteen to twenty year | Maximum
Income Taxes [Line Items]
Operating loss carryforwards expiration period	20 years
Non-U.S.
Income Taxes [Line Items]
Operating loss carryforwards	27,300,000
Non-U.S. | Expire over the next 20 years
Income Taxes [Line Items]
Operating loss carryforwards	2,600,000
Operating loss carryforwards expiration period	20 years
Non-U.S. | Carried forward indefinitely
Income Taxes [Line Items]
Operating loss carryforwards	24,700,000
Non-U.S. | Expire in 2018
Income Taxes [Line Items]
Tax credit carryforwards	10,000,000
Tax credit carryforwards expiration date	2018
U.S. | Federal
Income Taxes [Line Items]
Capital loss carryforwards	800,000
Capital loss carryforwards expiration date	2012
U.S. | State and Local Jurisdiction
Income Taxes [Line Items]
Capital loss carryforwards	800,000
Valuation allowance non-U.S. net operating losses and domestic capital loss carryforwards
Income Taxes [Line Items]
Valuation allowances	1,900,000	2,600,000
Valuation Allowance, Capital Loss Carryforwards
Income Taxes [Line Items]
Net (decrease) increase in valuation allowance	$ (700,000)