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Description of Business, Basis of Consolidation and Significant Accounting Policies - Additional Information (Detail) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2012 USD ($) Derivative | Sep. 30, 2012 USD ($) | Jun. 30, 2012 USD ($) | Mar. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Sep. 30, 2011 USD ($) | Jun. 30, 2011 USD ($) | Mar. 31, 2011 USD ($) | Dec. 31, 2012 USD ($) Derivative | Dec. 31, 2012 EUR (€) | Dec. 31, 2011 USD ($) | Dec. 31, 2010 USD ($) | Dec. 31, 2012 Prepaid expenses USD ($) | Dec. 31, 2012 Other assets USD ($) | Dec. 31, 2012 Property plant and equipment USD ($) | Dec. 31, 2012 Unvested Common Stock USD ($) Employee | Dec. 31, 2012 Unvested Common Stock Modification USD ($) | Dec. 31, 2012 Restatement Adjustment USD ($) | Dec. 31, 2012 Stock Option USD ($) | Dec. 31, 2011 Stock Option USD ($) | Dec. 31, 2010 Stock Option USD ($) | Dec. 31, 2012 Restricted Stock USD ($) | Dec. 31, 2011 Restricted Stock USD ($) | Dec. 31, 2010 Restricted Stock USD ($) | Dec. 31, 2012 Stock Options | Dec. 31, 2012 Building Minimum | Dec. 31, 2012 Building Maximum | Dec. 31, 2012 Machinery and equipment Minimum | Dec. 31, 2012 Machinery and equipment Maximum | Dec. 31, 2012 Office furniture, fixtures and equipment Minimum | Dec. 31, 2012 Office furniture, fixtures and equipment Maximum | Dec. 31, 2012 Automotive equipment Minimum | Dec. 31, 2012 Automotive equipment Maximum | Dec. 31, 2012 Construction in progress Minimum | Dec. 31, 2012 Construction in progress Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advertising expense |  |  |  |  |  |  |  |  | $ 2,680 |  | $ 2,095 | $ 2,530 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment Useful Life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years | 30 years | 3 years | 15 years | 3 years | 10 years | 3 years | 6 years | 3 years | 15 years
Derivative euro exchange forward contract |  |  |  |  |  |  |  |  |  | 4,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of interest rate swap contract | 44,250 |  |  |  |  |  |  |  | 44,250 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Interest rate swap contract outstanding | 1 |  |  |  |  |  |  |  | 1 | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income expected to be reclassified to earnings |  |  |  |  |  |  |  |  | (689) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior period reclassification increase (decrease) |  |  |  |  |  |  |  |  |  |  |  |  | 1,856 | 1,880 | (3,736) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales | 104,262 | 89,836 | 84,837 | 87,255 | 81,776 | 73,209 | 80,062 | 66,033 | 366,190 |  | 301,080 | 226,859 |  |  |  |  |  | 3,349 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of sales |  |  |  |  |  |  |  |  | 205,065 |  | 178,012 | 140,538 |  |  |  |  |  | 3,349 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred income tax assets | 4,877 |  |  |  | 3,417 |  |  |  | 4,877 |  | 3,417 |  |  |  |  |  |  | (3,417) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred income tax liabilities | 19,163 |  |  |  | 18,589 |  |  |  | 19,163 |  | 18,589 |  |  |  |  |  |  | (3,417) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reduction in share based compensation expense |  |  |  |  |  |  |  |  | 91 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forfeited percentage of stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.10% |  |  | 9.70% |  |  |  |  |  |  |  |  |  |  |  |  |
Nonvested unamortized stock-based compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 840 |  |  | 3,697 |  |  |  |  |  |  |  |  |  |  |  |  |
Nonvested unamortized stock-based compensation expense, contractual term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years 3 months 18 days |  |  | 1 year |  |  |  |  |  |  |  |  |  |
Weighted average grant-date fair values of options in period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.00 | $ 6.62 | $ 3.78 | $ 21.51 | $ 12.30 | $ 7.59 |  |  |  |  |  |  |  |  |  |  |
Retired number of employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total common stock,unvested |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,334 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock value per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7.50 | $ 23.55 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional share based compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 314 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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