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Income Taxes (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Employee Service Shared-based Compensation, Tax Benefit from Compensation Expense, Restricted Stock | $ (126,000) |  |
Current: |  |  |
Federal - US | 1,993,000 | $ 3,408,000 | $ 4,466,000
Federal - Foreign | 613,000 | 0 | 405,000
State and local | 24,000 | 2,000 | 18,000
Current income tax expense (benefit) | 2,630,000 | 3,410,000 | 4,889,000
Deferred: |  |  |
Federal | (407,000) | 490,000 | 1,143,000
Deferred Foreign Income Tax Expense (Benefit) | 52,000 | (86,000) | 27,000
State and local | 11,000 | 22,000 | 59,000
Deferred income tax expense (benefit) | (344,000) | 426,000 | 1,229,000
Total income taxes | 2,286,000 | 3,836,000 | 6,118,000
Reconciliation of income tax provision: |  |  |
Provision at federal statutory rate - US | 2,634,000 | 3,823,000 | 6,177,000
Effect of foreign taxes | (58,000) | 34,000 | (84,000)
State and local tax expense | 35,000 | 24,000 | 76,000
Other | (14,000) | (45,000) | (51,000)
Components of deferred tax assets (liabilities): |  |  |
Accrued liabilities | 608,000 | 938,000 |
Accounts receivable | 156,000 | 110,000 |
Inventory | 371,000 | 588,000 |
Other, net | (292,000) | (255,000) |
Total current asset | 843,000 | 1,381,000 |
Property, plant, and equipment | (3,345,000) | (5,274,000) |
Post retirement benefits | 2,060,000 | 3,212,000 |
Other, net | 47,000 | (311,000) |
Deferred Tax Liabilities, Net, Noncurrent | (1,238,000) | (2,373,000) |
Operating Loss Carryforwards |  | 0 |
Operating Loss Carryforwards, Valuation Allowance |  | 0 |
Unrecognized Tax Benefits | 0 | 0 |
Deferred Tax Liabilities, Net | 395,000 | 992,000 |
Deferred Tax Charge (Benefit) Adjustment | 484,000 | 0 | 0
Transitional Tax, net | 299,000 |  |
Deferred Tax Charge (Benefit) Adjustment, net | $ 185,000 |  |
Equity [Member] |  |  |
Employee Service Shared-based Compensation, Tax Benefit from Compensation Expense, Restricted Stock |  | $ 16,000 | $ (211,000)

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: 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)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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- Definition The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 30 -Paragraph 5 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=75018887&loc=d3e30536-109315 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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