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Income Taxes - Tax Effects of Temporary Differences That Give Rise to the Company's Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Disclosure [Abstract] |  |  |
Accrued compensation and benefits | $ 1,199 | $ 1,358 |
Inventory valuation reserves | 3,080 | 2,849 |
Allowance for doubtful accounts | 335 | 316 |
Benefit plan reserves | 10,878 | 11,331 |
Net operating loss carryforwards | 3,851 | 2,751 |
Tax credit carryforwards | 534 | 745 |
Other accrued expenses | 2,350 | 2,226 |
Unrealized foreign exchange | 3,179 | 1,805 |
Gross deferred tax assets | 25,406 | 23,381 |
Valuation allowance | (5,209) | (3,614) |
Net deferred tax assets | 20,197 | 19,767 |
Depreciation and other basis differences | (5,841) | (5,814) |
Intangibles | (2,959) | (3,706) |
Undistributed foreign earnings | (1,094) | (444) |
Other | (67) | (65) |
Deferred tax liabilities | (9,961) | (10,029) |
Net deferred tax assets | 10,236 | 9,738 |
Deferred income tax benefit | 944 | 1,697 | $ 1,105
Items of other comprehensive (loss) | (464) |  |
Items of other comprehensive income |  | 3,109 |
Currency translation | 18 | 140 |
Deferred tax balances from business acquisition | 0 | (2,025) |
Total change in net deferred tax assets | $ 498 | $ 2,921 |

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- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6510177 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 + Details
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- Definition The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising from employee benefit costs not otherwise specified in the taxonomy, which can only be deducted for tax purposes when actual costs are incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51675352&loc=d3e28680-109314 Reference 3: 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 + Details
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