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Income Taxes - Additional Information (Detail) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Income Tax Disclosure [Abstract] |  |  |
Valuation allowance for deferred income tax assets | $ 15,644,000 | $ 9,344,000 | $ 8,800,000
(Increase) decrease in total valuation allowance | (6,300,000) | (500,000) | 2,600,000
Tax effect of state and foreign net operating loss carryforwards | 20,828,000 | 17,115,000 |
2014 | 300,000 |  |
2015 | 100,000 |  |
2016 | 0 |  |
2017 | 700,000 |  |
2018 | 300,000 |  |
Thereafter | 19,400,000 |  |
Valuation allowance foreign and state net operating loss carryforwards | 15,400,000 |  |
Not provided U.S. income taxes of unremitted foreign earnings | 218,000,000 |  |
Reduction due to expiration of certain federal and state statutes of limitations | 11,479,000 | 11,965,000 | 8,640,000
Settlements |  | 895,000 | 4,877,000
Interest and penalties expense (income) in the provision for income taxes | $ (300,000) | $ (1,100,000) | $ 700,000

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