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Income Taxes - Additional Information (Detail) (USD $)
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12 Months Ended |
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Income Taxes [Line Items] |
|
|
|
| Tax provision |
$ 6,214,000 |
$ 2,691,000 |
$ 4,034,000 |
| Income (loss) before income taxes |
(1,468,000) |
6,257,000 |
9,795,000 |
| Deferred tax liabilities included in accrued expenses |
15,000 |
28,000 |
|
| Deferred tax liabilities included in long term liabilities |
15,000 |
15,000 |
|
| Increase (Decrease) in valuation allowance |
373,000 |
(677,000) |
933,000 |
| Accumulated undistributed earnings |
4,700,000 |
|
|
| Uncertain tax positions |
304,000 |
251,000 |
198,000 |
| Interest expense |
4,000,000 |
2,000,000 |
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Federal [Member]
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| Income Taxes [Line Items] |
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|
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| Net operating loss carryforwards |
0 |
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| Utilized operating loss carryforwards |
0 |
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Federal [Member] | Research and Development Credit Carryforward [Member]
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| Income Taxes [Line Items] |
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| Research and development carryforwards |
0 |
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State [Member]
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|
|
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| Income Taxes [Line Items] |
|
|
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| Net operating loss carryforwards |
131,000 |
|
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| Utilized operating loss carryforwards |
130,000 |
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State [Member] | Research and Development Credit Carryforward [Member]
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|
|
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| Income Taxes [Line Items] |
|
|
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| Research and development carryforwards |
7,000 |
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Foreign [Member]
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| Income Taxes [Line Items] |
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| Net operating loss carryforwards |
23,800,000 |
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| Utilized operating loss carryforwards |
120,000 |
|
|
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Foreign [Member] | Research and Development Credit Carryforward [Member]
|
|
|
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| Income Taxes [Line Items] |
|
|
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| Research and development carryforwards |
$ 400,000 |
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Foreign Research and Development Credit [Member] | Research and Development Credit Carryforward [Member]
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| Income Taxes [Line Items] |
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| Foreign Research and development, expiration period |
2014 |
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