00100 - Statement - CONSOLIDATED CONDENSED BALANCE SHEETS
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00200 - Statement - CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS
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00300 - Statement - CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS
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40202 - Disclosure - Accounts Receivable (Table) (Details)
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40302 - Disclosure - Inventories (Table) (Details)
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40502 - Disclosure - Deferred Revenue and Advances from Customers (Deferred Revenue and Advances From Customers) (Details)
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40902 - Disclosure - Pension and Postretirement Health and Life Benefits (Pension and Postretirement Health and Life Benefits) (Details)
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41001 - Disclosure - Stockholders' Equity (Changes in Stockholders Equity) (Details)
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41102 - Disclosure - Stock-Based Compensation (Stock-Based Compensation Costs) (Details)
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00090 - Document - Document and Entity Information
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10101 - Disclosure - Basis of Presentation
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10201 - Disclosure - Accounts Receivable
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10301 - Disclosure - Inventories
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10401 - Disclosure - Property, Plant and Equipment
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10501 - Disclosure - Deferred Revenue and Advances From Customers
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10601 - Disclosure - Portsmouth Transition of Services
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10701 - Disclosure - Debt
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10801 - Disclosure - Fair Value Measurements
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10901 - Disclosure - Pension and Postretirement Health and Life Benefits
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11001 - Disclosure - Stockholders' Equity
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11101 - Disclosure - Stock-Based Compensation
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11201 - Disclosure - Net Income Per Share
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11301 - Disclosure - Commitments and Contingencies
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11401 - Disclosure - Segment Information
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30203 - Disclosure - Accounts Receivable (Tables)
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30303 - Disclosure - Inventories (Tables)
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30403 - Disclosure - Property, Plant and Equipment (Tables)
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30503 - Disclosure - Deferred Revenue and Advances From Customers (Tables)
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30703 - Disclosure - Debt (Tables)
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30803 - Disclosure - Fair Value Measurements (Tables)
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30903 - Disclosure - Pension and Postretirement Health and Life Benefits (Tables)
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31003 - Disclosure - Stockholders' Equity (Tables)
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31103 - Disclosure - Stock-Based Compensation (Tables)
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31203 - Disclosure - Net Income Per Share (Tables)
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31403 - Disclosure - Segment Information (Tables)
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40201 - Disclosure - Accounts Receivable (Narrative) (Details)
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40301 - Disclosure - Inventories (Narrative) (Details)
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40401 - Disclosure - Property, Plant and Equipment (Narrative) (Details)
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40402 - Disclosure - Property, Plant and Equipment (Summary of Changes in Property, Plant and Equipment) (Details)
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40501 - Disclosure - Deferred Revenue and Advances from Customers (Narrative) (Details)
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40601 - Disclosure - Portsmouth Transition of Services (Details)
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40701 - Disclosure - Debt (Narrative) (Details)
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40702 - Disclosure - Debt (Schedule of Revolving Credit Facility) (Details)
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40801 - Disclosure - Fair Value Measurements (Financial Instruments Recorded at Fair Value) (Details)
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40802 - Disclosure - Fair Value Measurements (Reconciliation of Fair Value Using Significant Unobservable Inputs ) (Details)
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40803 - Disclosure - Fair Value Measurements (Table) (Details)
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40901 - Disclosure - Pension and Postretirement Health and Life Benefits (Narrative) (Details)
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41002 - Disclosure - Stockholders' Equity (Changes in Stockholders' Equity) (Parenthetical)
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41101 - Disclosure - Stock-Based Compensation (Narrative) (Details)
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41103 - Disclosure - Stock-Based Compensation (Assumptions Used in the Black-Scholes Option Pricing Model) (Details)
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41201 - Disclosure - Net Income Per Share (Narrative) (Details)
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41202 - Disclosure - Net Income Per Share (Schedule of Income Per Share) (Details)
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41203 - Disclosure - Net Income Per Share (Options and Warrants Excluded From the Calculation) (Details)
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41301 - Disclosure - Commitment and Contingencies (Details)
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41401 - Disclosure - Segment Information (Segment Reporting Information) (Details)
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