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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Taxes [Line Items] |  |  |
Valuation allowance | $ 26,329,000 | $ 29,561,000 |
Deferred income taxes, undistributed foreign earnings | 5,700,000 | 3,700,000 |
Impact of repatriation, net of foreign tax credits | 0 | 0 |
Unrecognized tax benefits, impact on effective tax rate | 500,000 | 900,000 | $ 1,300,000
Accrued interest and penalties | 200,000 | 2,500,000 | 2,800,000
Increase (decrease) in income tax expense | (2,300,000) | $ (300,000) | $ (300,000)
Unrecognized tax benefits, gross | 300,000 |  |
Foreign Countries |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carryforwards, foreign | $ 27,900,000 |  |
Net operating loss carry forwards expiring in and beyond the stated year | expire in 2016 and later |  |
California enterprise zone |  |  |
Income Taxes [Line Items] |  |  |
California enterprise zone tax credits | $ 4,300,000 |  |
Tax credit carry forwards expiring in and beyond the stated year | expire in 2023 |  |
Foreign Countries |  |  |
Income Taxes [Line Items] |  |  |
Valuation allowance | $ 24,500,000 |  |
California Enterprise Zone | California enterprise zone |  |  |
Income Taxes [Line Items] |  |  |
Valuation allowance | $ 1,800,000 |  |

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