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Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Deferred tax assets: |  |  |
Accrued compensation and benefits | $ 1,808 | $ 1,520 |
Inventory valuation reserves | 2,771 | 1,938 |
Benefit plan reserves | 9,468 | 9,126 |
Capital tax loss carryforwards | 2,034 | 2,054 |
Net operating loss carryforwards | 788 | 1,061 |
Other accrued expenses | 2,480 | 2,222 |
Unrealized foreign exchange | 58 | 346 |
Gross deferred tax assets | 19,407 | 18,267 |
Valuation allowance | (2,329) | (3,115) |
Net deferred tax assets | 17,078 | 15,152 |
Deferred tax liabilities: |  |  |
Depreciation and other basis differences | (5,276) | (4,602) |
Intangibles | (3,571) | (2,706) |
Other | (90) | (307) |
Deferred tax liabilities | (8,937) | (7,615) |
Net deferred tax assets | 8,141 | 7,537 |
Change in net deferred tax assets: |  |  |
Deferred income tax benefit | (2,927) | (688) | (900)
Items of other comprehensive income (loss) | (1,033) | 2,175 |
Currency translation | (254) | (49) |
Deferred tax balances from business acquisition | (1,036) | 0 |
Total change in net deferred tax assets | $ 604 | $ 2,814 |

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- Definition Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 11 -Subparagraph a, d, e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6969291&loc=d3e28680-109314 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Data Type: | xbrli:monetaryItemType
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Period Type: | instant