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Income Taxes (Details 2) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Current deferred tax assets |  |  |
State tax | $ 1,133,000 | $ 1,586,000 | $ 1,197,000
Workers' compensation | 1,814,000 | 2,123,000 | 1,816,000
Health claims | 516,000 | 549,000 | 519,000
Vacation liability | 1,037,000 | 865,000 | 786,000
Allowance for doubtful accounts | 332,000 | 291,000 | 351,000
Inventories | 5,713,000 | 4,796,000 | 5,141,000
Sales incentive and advertising allowances | 580,000 | 408,000 | 399,000
State tax credit carry forward |  |  | 125,000
Intangible rights write-off |  | 194,000 |
Acquisition expenses |  | 477,000 |
Unrealized foreign exchange gain or loss | 39,000 | 57,000 | 86,000
Other, net | 309,000 | 428,000 | 271,000
Current deferred tax assets, gross | 11,473,000 | 11,774,000 | 10,691,000
Less valuation allowances |  |  | (502,000)
Current deferred tax assets, net | 11,473,000 | 11,774,000 | 10,189,000
Long-term deferred tax assets (liabilities) |  |  |
Depreciation | (2,434,000) | (3,067,000) | (1,614,000)
Goodwill and other intangibles amortization | (4,086,000) | (314,000) | (1,447,000)
Deferred compensation related to stock options | 7,296,000 | 5,485,000 | 4,841,000
Uncertain tax positions' unrecognized tax benefits | 1,140,000 | 1,115,000 | 1,438,000
Keymark investments basis difference |  |  | 663,000
Non-United States tax loss carry forward | 8,064,000 | 5,912,000 | 5,548,000
Tax effect on cumulative translation adjustment | (763,000) | (812,000) | (826,000)
Other | 526,000 | 811,000 | 641,000
Long-term deferred tax assets, gross | 9,743,000 | 9,130,000 | 9,244,000
Less valuation allowances | (9,719,000) | (6,279,000) | (6,665,000)
Long-term deferred tax assets | 24,000 | 2,851,000 | 2,579,000
Deferred tax assets | 21,600,000 | 21,400,000 | 19,200,000
Deferred tax liabilities | 10,100,000 | 6,700,000 | 6,500,000
Operating loss carryforwards |  |  |
Deferred tax valuation allowances | 9,700,000 | 6,300,000 |
Increase (decrease) in the valuation allowance | 3,400,000 | (900,000) | 2,300,000
Undistributed earnings indefinitely reinvested | 29,000,000 | 20,900,000 | 14,600,000
Foreign |  |  |
Operating loss carryforwards |  |  |
Pre-tax loss carryforwards | 41,000,000 |  |
Foreign | Wholly owned Irish subsidiary |  |  |
Operating loss carryforwards |  |  |
Pre-tax loss carryforwards | 16,700,000 |  |
Foreign | Expiration, 2013 |  |  |
Operating loss carryforwards |  |  |
Pre-tax loss carryforwards | 900,000 |  |
Foreign | Expiration, 2014 |  |  |
Operating loss carryforwards |  |  |
Pre-tax loss carryforwards | 1,600,000 |  |
Foreign | Expiration, 2015 |  |  |
Operating loss carryforwards |  |  |
Pre-tax loss carryforwards | 800,000 |  |
Foreign | Expiration, 2016 |  |  |
Operating loss carryforwards |  |  |
Pre-tax loss carryforwards | 800,000 |  |
Foreign | Expiration, 2017 |  |  |
Operating loss carryforwards |  |  |
Pre-tax loss carryforwards | $ 1,800,000 |  |

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