Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Favorable discrete tax items	$ 1,000,000	$ 1,000,000	$ 1,000,000
Foreign pre-tax earnings	15,000,000	6,000,000	38,000,000
Effective income tax rate, foreign	21.00%
Undistributed foreign earnings	10,000,000
Unrecognizable deferred tax liability related to foreign earnings	4,000,000
Deferred federal and state tax benefit	17,000,000	5,000,000
Future taxable income, amount	1,110,000,000
Deferred state tax benefit (net of the federal benefit)	7,525,000	3,278,000	(6,157,000)
Net operating losses	60,521,000	57,204,000
Deferred foreign tax benefit	3,000,000
Valuation allowances	52,764,000	46,841,000
Increase in estimated liabilities for uncertain tax positions	1,000,000	1,000,000
Decrease in estimated liabilities for uncertain tax positions due to the lapse of the statute of limitations	1,000,000
Impact of unrecognized tax benefits if recognized	2,000,000	2,000,000
Jurisdictions statutes of limitations expiration period	12 months
Period of expiration of the statute of limitations for certain jurisdictions	Within the next twelve months
Allowance in relation to state tax benefit
Income Taxes [Line Items]
Valuation allowances	50,000,000	44,000,000
Net Operating Losses
Income Taxes [Line Items]
Increase in valuation allowance	6,000,000
Foreign Net Operating Losses
Income Taxes [Line Items]
Increase in valuation allowance	3,000,000	3,000,000
Maximum
Income Taxes [Line Items]
Accrued interest and penalties	1,000,000	1,000,000
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years	4 years
Minimum
Income Taxes [Line Items]
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years	3 years
State and Local Jurisdiction
Income Taxes [Line Items]
Deferred state tax benefit (net of the federal benefit)	54,000,000
Foreign Tax Authority
Income Taxes [Line Items]
Net operating losses	$ 7,000,000