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Guarantor and Non-Guarantor Financial Statements (Details) - USD ($) | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jan. 01, 2018 | Jun. 01, 2016 | May 15, 2016 | May 23, 2012
Condensed Financial Statements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  | $ 389,400,000 | $ 393,100,000 | $ 415,400,000 | $ 388,000,000.0 | $ 353,100,000 | $ 332,800,000 | $ 356,300,000 | $ 355,300,000 | $ 1,585,900,000 |  | $ 1,397,500,000 |  | $ 1,330,600,000 |  |  |  |  |
Ownership interest by parent |  | 100.00% |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ 125,600,000 |  |  |  | 51,100,000 |  |  |  | $ 125,600,000 |  | 51,100,000 |  | 55,200,000 |  |  |  |  |
Short-term investments |  | 36,700,000 |  |  |  | 183,700,000 |  |  |  | 36,700,000 |  | 183,700,000 |  |  |  |  |  |  |
Receivables: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade, less allowance for doubtful receivables |  | 179,800,000 |  |  |  | 165,000,000.0 |  |  |  | 179,800,000 |  | 165,000,000.0 |  |  |  |  |  |  |
Intercompany receivables |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Other |  | 25,600,000 |  |  |  | 15,500,000 |  |  |  | 25,600,000 |  | 15,500,000 |  |  |  |  |  |  |
Contract assets |  | 54,900,000 |  |  |  | 0 |  |  |  | 54,900,000 |  | 0 |  |  |  | $ 55,600,000 |  |  |
Inventories |  | 215,100,000 |  |  |  | 207,900,000 |  |  |  | 215,100,000 |  | 207,900,000 |  |  |  | 167,200,000 |  |  |
Prepaid expenses and other current assets |  | 18,900,000 |  |  |  | 33,400,000 |  |  |  | 18,900,000 |  | 33,400,000 |  |  |  |  |  |  |
Total current assets |  | 656,600,000 |  |  |  | 656,600,000 |  |  |  | 656,600,000 |  | 656,600,000 |  |  |  | 671,500,000 |  |  |
Investments in and advances to unconsolidated affiliates |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Property, plant and equipment, net |  | 611,800,000 |  |  |  | 571,400,000 |  |  |  | 611,800,000 |  | 571,400,000 |  |  |  |  |  |  |
Long-term intercompany receivables |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Deferred tax assets, net |  | 35,900,000 |  |  |  | 72,000,000.0 |  |  |  | 35,900,000 |  | 72,000,000.0 |  |  |  | 68,700,000 |  |  |
Intangible assets, net |  | 32,400,000 |  |  |  | 25,000,000.0 |  |  |  | 32,400,000 |  | 25,000,000.0 |  |  |  |  |  |  |
Goodwill |  | 44,000,000.0 |  |  |  | 18,800,000 |  |  |  | 44,000,000.0 |  | 18,800,000 |  |  |  |  |  |  |
Other assets |  | 38,600,000 |  |  |  | 41,400,000 |  |  |  | 38,600,000 |  | 41,400,000 |  |  |  |  |  |  |
Total |  | 1,419,300,000 |  |  |  | 1,385,200,000 |  |  |  | 1,419,300,000 |  | 1,385,200,000 |  |  |  | 1,396,800,000 |  |  |
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable |  | 121,400,000 |  |  |  | 90,000,000.0 |  |  |  | 121,400,000 |  | 90,000,000.0 |  |  |  |  |  |  |
Intercompany payable |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Accrued salaries, wages and related expenses |  | 40,100,000 |  |  |  | 42,600,000 |  |  |  | 40,100,000 |  | 42,600,000 |  |  |  |  |  |  |
Other accrued liabilities |  | 44,000,000.0 |  |  |  | 40,500,000 |  |  |  | 44,000,000.0 |  | 40,500,000 |  |  |  | 42,000,000.0 |  |  |
Total current liabilities |  | 205,500,000 |  |  |  | 173,100,000 |  |  |  | 205,500,000 |  | 173,100,000 |  |  |  | 174,600,000 |  |  |
Net liabilities of Salaried VEBA |  | 32,400,000 |  |  |  | 31,900,000 |  |  |  | 32,400,000 |  | 31,900,000 |  |  |  |  |  |  |
Deferred tax liabilities |  | 4,200,000 |  |  |  | 4,300,000 |  |  |  | 4,200,000 |  | 4,300,000 |  |  |  |  |  |  |
Long-term intercompany payable |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Long-term liabilities |  | 66,400,000 |  |  |  | 60,000,000.0 |  |  |  | 66,400,000 |  | 60,000,000.0 |  |  |  |  |  |  |
Long-term debt |  | 370,400,000 |  |  |  | 369,600,000 |  |  |  | 370,400,000 |  | 369,600,000 |  |  |  |  |  |  |
Total liabilities |  | 678,900,000 |  |  |  | 638,900,000 |  |  |  | 678,900,000 |  | 638,900,000 |  |  |  | 640,400,000 |  |  |
Total stockholders' equity |  | 740,400,000 |  |  |  | 746,300,000 |  |  |  | 740,400,000 |  | 746,300,000 |  |  |  | 756,400,000 |  |  |
Total liabilities and stockholders' equity |  | 1,419,300,000 |  |  |  | 1,385,200,000 |  |  |  | 1,419,300,000 |  | 1,385,200,000 |  |  |  | $ 1,396,800,000 |  |  |
Costs and expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of Goods and Services Sold |  | 317,300,000 | 323,300,000 | 343,400,000 | 316,700,000 | 277,200,000 | 256,400,000 | 289,600,000 | 262,700,000 | 1,300,700,000 | [1] | 1,085,900,000 | [1] | 1,000,800,000 | [1] |  |  |  |
Lower of cost or market inventory write-down |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 4,900,000 |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 43,900,000 |  | 39,700,000 |  | 36,000,000.0 |  |  |  |  |
Selling, general, administrative, research and development | [2] |  |  |  |  |  |  |  |  | 96,300,000 |  | 97,500,000 |  | 105,000,000.0 |  |  |  |  |
Net periodic postretirement benefit cost relating to Salaried VEBA |  |  |  |  |  |  |  |  |  | 6,100,000 |  | 4,500,000 |  | 3,400,000 |  |  |  |  |
Goodwill impairment |  |  |  |  |  |  |  | 18,400,000 |  | 0 |  | 18,400,000 |  | 0 |  |  |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  |  | 1,400,000 |  | 800,000 |  | 2,800,000 |  |  |  |  |
Total costs and expenses |  |  |  |  |  |  |  |  |  | 1,442,300,000 |  | 1,242,300,000 |  | 1,149,500,000 |  |  |  |  |
Operating (loss) income |  | 36,900,000 | 34,900,000 | 34,700,000 | 37,100,000 | 41,900,000 | 41,500,000 | 12,500,000 | 59,300,000 | 143,600,000 |  | 155,200,000 |  | 181,100,000 |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  | (22,700,000) |  | (22,200,000) |  | (20,300,000) |  |  |  |  |
Other expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income, net |  |  |  |  |  |  |  |  |  | (900,000) |  | 0 |  | (13,600,000) |  |  |  |  |
(Loss) income before income taxes |  |  |  |  |  |  |  |  |  | 120,000,000.0 |  | 133,000,000.0 |  | 147,200,000 |  |  |  |  |
Income tax provision |  |  |  |  |  |  |  |  |  | (28,300,000) |  | (87,600,000) |  | (55,500,000) |  |  |  |  |
Earnings in equity of subsidiaries |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Net income |  | 23,600,000 | $ 21,700,000 | $ 20,700,000 | 25,700,000 | (15,200,000) | $ 19,900,000 | $ 4,700,000 | 36,000,000.0 | 91,700,000 |  | 45,400,000 |  | 91,700,000 |  |  |  |  |
Comprehensive income |  |  |  |  |  |  |  |  |  | 80,000,000.0 |  | 45,400,000 |  | 86,700,000 |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities | [3] |  |  |  |  |  |  |  |  | 150,200,000 |  | 141,500,000 |  | 165,600,000 |  |  |  |  |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  | (74,100,000) |  | (75,500,000) |  | (76,100,000) |  |  |  |  |
Purchase of available for sale securities |  |  |  |  |  |  |  |  |  | (135,200,000) |  | (247,500,000) |  | (255,300,000) |  |  |  |  |
Payments to Acquire Available-for-sale Securities, Equity |  |  |  |  |  |  |  |  |  | (900,000) |  | 0 |  | 0 |  |  |  |  |
Proceeds from disposition of available for sale securities |  |  |  |  |  |  |  |  |  | 283,900,000 |  | 296,900,000 |  | 55,000,000.0 |  |  |  |  |
Cash payment for acquisition of Imperial Machine & Tool Co., net of cash received |  |  |  |  |  |  |  |  |  | (43,200,000) |  | 0 |  | 0 |  |  |  |  |
Proceeds from disposal of property, plant and equipment |  |  |  |  |  |  |  |  |  | 600,000 |  | 600,000 |  | 0 |  |  |  |  |
Intercompany loans receivable |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Net cash provided by (used in) investing activities | [4] |  |  |  |  |  |  |  |  | 31,100,000 |  | (25,500,000) |  | (276,400,000) |  |  |  |  |
Repayment of principal and redemption premium of 8.25% Senior Notes |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | (206,000,000.0) |  |  |  |  |
Issuance of 5.875% Senior Notes |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 375,000,000.0 |  |  |  |  |
Cash paid for debt issuance costs |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | (6,800,000) |  |  |  |  |
Proceeds from stock option exercises |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 1,200,000 |  |  |  |  |
Repayment of capital lease |  |  |  |  |  |  |  |  |  | (700,000) |  | (400,000) |  | 0 |  |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  |  |  |  |  |  |  |  |  | (6,900,000) |  | (4,500,000) |  | (2,900,000) |  |  |  |  |
Repurchase of common stock |  |  |  |  |  |  |  |  |  | (60,700,000) |  | (79,500,000) |  | (33,300,000) |  |  |  |  |
Cash dividends and dividend equivalents paid |  |  |  |  |  |  |  |  |  | (37,700,000) |  | (35,000,000.0) |  | (32,400,000) |  |  |  |  |
Cash dividends paid to Parent |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Intercompany loans payable1 |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Net cash (used in) provided by financing activities | [4] |  |  |  |  |  |  |  |  | (106,000,000.0) |  | (119,400,000) |  | 94,800,000 |  |  |  |  |
Net increase (decrease) in cash, cash equivalents and restricted cash during the period |  |  |  |  |  |  |  |  |  | 75,300,000 |  | (3,400,000) |  | (16,000,000.0) |  |  |  |  |
Cash, cash equivalents and restricted cash at beginning of period |  |  |  |  | 64,300,000 |  |  |  | 67,700,000 | 64,300,000 |  | 67,700,000 |  | 83,700,000 |  |  |  |  |
Cash, cash equivalents and restricted cash at end of period |  | 139,600,000 |  |  |  | 64,300,000 |  |  |  | 139,600,000 |  | 64,300,000 |  | 67,700,000 |  |  |  |  |
Consolidating Adjustments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | (99,200,000) |  | (83,500,000) |  | (74,400,000) |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Short-term investments |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Receivables: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade, less allowance for doubtful receivables |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Intercompany receivables |  | (148,100,000) |  |  |  | (23,600,000) |  |  |  | (148,100,000) |  | (23,600,000) |  |  |  |  |  |  |
Other |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Contract assets |  | 0 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Inventories |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Prepaid expenses and other current assets |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Total current assets |  | (148,100,000) |  |  |  | (23,600,000) |  |  |  | (148,100,000) |  | (23,600,000) |  |  |  |  |  |  |
Investments in and advances to unconsolidated affiliates |  | (1,069,800,000) |  |  |  | (1,145,900,000) |  |  |  | (1,069,800,000) |  | (1,145,900,000) |  |  |  |  |  |  |
Property, plant and equipment, net |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Long-term intercompany receivables |  | (9,800,000) |  |  |  | (12,400,000) |  |  |  | (9,800,000) |  | (12,400,000) |  |  |  |  |  |  |
Deferred tax assets, net |  | 3,000,000.0 |  |  |  | 4,700,000 |  |  |  | 3,000,000.0 |  | 4,700,000 |  |  |  |  |  |  |
Intangible assets, net |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Goodwill |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Other assets |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Total |  | (1,224,700,000) |  |  |  | (1,177,200,000) |  |  |  | (1,224,700,000) |  | (1,177,200,000) |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Intercompany payable |  | (148,100,000) |  |  |  | (23,600,000) |  |  |  | (148,100,000) |  | (23,600,000) |  |  |  |  |  |  |
Accrued salaries, wages and related expenses |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Other accrued liabilities |  | (6,300,000) |  |  |  | (9,500,000) |  |  |  | (6,300,000) |  | (9,500,000) |  |  |  |  |  |  |
Total current liabilities |  | (154,400,000) |  |  |  | (33,100,000) |  |  |  | (154,400,000) |  | (33,100,000) |  |  |  |  |  |  |
Net liabilities of Salaried VEBA |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Deferred tax liabilities |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Long-term intercompany payable |  | (9,800,000) |  |  |  | (12,400,000) |  |  |  | (9,800,000) |  | (12,400,000) |  |  |  |  |  |  |
Long-term liabilities |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Long-term debt |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Total liabilities |  | (164,200,000) |  |  |  | (45,500,000) |  |  |  | (164,200,000) |  | (45,500,000) |  |  |  |  |  |  |
Total stockholders' equity |  | (1,060,500,000) |  |  |  | (1,131,700,000) |  |  |  | (1,060,500,000) |  | (1,131,700,000) |  |  |  |  |  |  |
Total liabilities and stockholders' equity |  | (1,224,700,000) |  |  |  | (1,177,200,000) |  |  |  | (1,224,700,000) |  | (1,177,200,000) |  |  |  |  |  |  |
Costs and expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of Goods and Services Sold |  |  |  |  |  |  |  |  |  | (96,500,000) |  | (81,300,000) |  | (71,100,000) |  |  |  |  |
Lower of cost or market inventory write-down |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Selling, general, administrative, research and development |  |  |  |  |  |  |  |  |  | (2,700,000) |  | (2,200,000) |  | (2,600,000) |  |  |  |  |
Goodwill impairment |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Total costs and expenses |  |  |  |  |  |  |  |  |  | (99,200,000) |  | (83,500,000) |  | (73,700,000) |  |  |  |  |
Operating (loss) income |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | (700,000) |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  | 600,000 |  | 200,000 |  | 100,000 |  |  |  |  |
Other expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income, net |  |  |  |  |  |  |  |  |  | (600,000) |  | (200,000) |  | (100,000) |  |  |  |  |
(Loss) income before income taxes |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | (700,000) |  |  |  |  |
Income tax provision |  |  |  |  |  |  |  |  |  | 6,300,000 |  | 9,500,000 |  | 14,100,000 |  |  |  |  |
Earnings in equity of subsidiaries |  |  |  |  |  |  |  |  |  | (119,700,000) |  | (74,900,000) |  | (130,300,000) |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | (113,400,000) |  | (65,400,000) |  | (116,900,000) |  |  |  |  |
Comprehensive income |  |  |  |  |  |  |  |  |  | (101,700,000) |  | (65,400,000) |  | (111,900,000) |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  | (250,000,000.0) |  | 0 |  | (200,000,000.0) |  |  |  |  |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Purchase of available for sale securities |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Payments to Acquire Available-for-sale Securities, Equity |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Proceeds from disposition of available for sale securities |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Cash payment for acquisition of Imperial Machine & Tool Co., net of cash received |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Proceeds from disposal of property, plant and equipment |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Intercompany loans receivable |  |  |  |  |  |  |  |  |  | 121,900,000 |  | (135,600,000) |  | 56,900,000 |  |  |  |  |
Net cash provided by (used in) investing activities |  |  |  |  |  |  |  |  |  | 121,900,000 |  | (135,600,000) |  | 56,900,000 |  |  |  |  |
Repayment of principal and redemption premium of 8.25% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Issuance of 5.875% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Cash paid for debt issuance costs |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Proceeds from stock option exercises |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Repayment of capital lease |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Repurchase of common stock |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Cash dividends and dividend equivalents paid |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Payments of Dividends |  |  |  |  |  |  |  |  |  |  |  |  |  | (200,000,000.0) |  |  |  |  |
Cash dividends paid to Parent |  |  |  |  |  |  |  |  |  | 250,000,000.0 |  |  |  |  |  |  |  |  |
Intercompany loans payable1 |  |  |  |  |  |  |  |  |  | (121,900,000) |  | 135,600,000 |  | (56,900,000) |  |  |  |  |
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  |  | 128,100,000 |  | 135,600,000 |  | 143,100,000 |  |  |  |  |
Net increase (decrease) in cash, cash equivalents and restricted cash during the period |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Cash, cash equivalents and restricted cash at beginning of period |  |  |  |  | 0 |  |  |  | 0 | 0 |  | 0 |  | 0 |  |  |  |  |
Cash, cash equivalents and restricted cash at end of period |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Short-term investments |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Receivables: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade, less allowance for doubtful receivables |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Intercompany receivables |  | 143,700,000 |  |  |  | 22,800,000 |  |  |  | 143,700,000 |  | 22,800,000 |  |  |  |  |  |  |
Other |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Contract assets |  | 0 |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Inventories |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Prepaid expenses and other current assets |  | 100,000 |  |  |  | 100,000 |  |  |  | 100,000 |  | 100,000 |  |  |  |  |  |  |
Total current assets |  | 143,800,000 |  |  |  | 22,900,000 |  |  |  | 143,800,000 |  | 22,900,000 |  |  |  |  |  |  |
Investments in and advances to unconsolidated affiliates |  | 974,700,000 |  |  |  | 1,097,700,000 |  |  |  | 974,700,000 |  | 1,097,700,000 |  |  |  |  |  |  |
Property, plant and equipment, net |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Long-term intercompany receivables |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Deferred tax assets, net |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Intangible assets, net |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Goodwill |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Other assets |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Total |  | 1,118,500,000 |  |  |  | 1,120,600,000 |  |  |  | 1,118,500,000 |  | 1,120,600,000 |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable |  | 4,900,000 |  |  |  | 1,900,000 |  |  |  | 4,900,000 |  | 1,900,000 |  |  |  |  |  |  |
Intercompany payable |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Accrued salaries, wages and related expenses |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Other accrued liabilities |  | 2,800,000 |  |  |  | 2,800,000 |  |  |  | 2,800,000 |  | 2,800,000 |  |  |  |  |  |  |
Total current liabilities |  | 7,700,000 |  |  |  | 4,700,000 |  |  |  | 7,700,000 |  | 4,700,000 |  |  |  |  |  |  |
Net liabilities of Salaried VEBA |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Deferred tax liabilities |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Long-term intercompany payable |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Long-term liabilities |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Long-term debt |  | 370,400,000 |  |  |  | 369,600,000 |  |  |  | 370,400,000 |  | 369,600,000 |  |  |  |  |  |  |
Total liabilities |  | 378,100,000 |  |  |  | 374,300,000 |  |  |  | 378,100,000 |  | 374,300,000 |  |  |  |  |  |  |
Total stockholders' equity |  | 740,400,000 |  |  |  | 746,300,000 |  |  |  | 740,400,000 |  | 746,300,000 |  |  |  |  |  |  |
Total liabilities and stockholders' equity |  | 1,118,500,000 |  |  |  | 1,120,600,000 |  |  |  | 1,118,500,000 |  | 1,120,600,000 |  |  |  |  |  |  |
Costs and expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of Goods and Services Sold |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Lower of cost or market inventory write-down |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Selling, general, administrative, research and development |  |  |  |  |  |  |  |  |  | 4,800,000 |  | 4,500,000 |  | 4,200,000 |  |  |  |  |
Goodwill impairment |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Total costs and expenses |  |  |  |  |  |  |  |  |  | 4,800,000 |  | 4,500,000 |  | 4,200,000 |  |  |  |  |
Operating (loss) income |  |  |  |  |  |  |  |  |  | (4,800,000) |  | (4,500,000) |  | (4,200,000) |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  | (21,100,000) |  | (20,700,000) |  | (21,600,000) |  |  |  |  |
Other expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income, net |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | (11,100,000) |  |  |  |  |
(Loss) income before income taxes |  |  |  |  |  |  |  |  |  | (25,900,000) |  | (25,200,000) |  | (36,900,000) |  |  |  |  |
Income tax provision |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Earnings in equity of subsidiaries |  |  |  |  |  |  |  |  |  | 117,600,000 |  | 70,600,000 |  | 128,600,000 |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | 91,700,000 |  | 45,400,000 |  | 91,700,000 |  |  |  |  |
Comprehensive income |  |  |  |  |  |  |  |  |  | 80,000,000.0 |  | 45,400,000 |  | 86,700,000 |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  | 226,200,000 |  | (24,200,000) |  | 177,700,000 |  |  |  |  |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Purchase of available for sale securities |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Payments to Acquire Available-for-sale Securities, Equity |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Proceeds from disposition of available for sale securities |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Cash payment for acquisition of Imperial Machine & Tool Co., net of cash received |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Proceeds from disposal of property, plant and equipment |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Intercompany loans receivable |  |  |  |  |  |  |  |  |  | (120,900,000) |  | 143,200,000 |  | (166,000,000.0) |  |  |  |  |
Net cash provided by (used in) investing activities |  |  |  |  |  |  |  |  |  | (120,900,000) |  | 143,200,000 |  | (166,000,000.0) |  |  |  |  |
Repayment of principal and redemption premium of 8.25% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  | (206,000,000.0) |  |  |  |  |
Issuance of 5.875% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  | 375,000,000.0 |  |  |  |  |
Cash paid for debt issuance costs |  |  |  |  |  |  |  |  |  |  |  |  |  | (6,800,000) |  |  |  |  |
Proceeds from stock option exercises |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000 |  |  |  |  |
Repayment of capital lease |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  |  |  |  |  |  |  |  |  | (6,900,000) |  | (4,500,000) |  | (2,900,000) |  |  |  |  |
Repurchase of common stock |  |  |  |  |  |  |  |  |  | (60,700,000) |  | (79,500,000) |  | (33,300,000) |  |  |  |  |
Cash dividends and dividend equivalents paid |  |  |  |  |  |  |  |  |  | (37,700,000) |  | (35,000,000.0) |  | (32,400,000) |  |  |  |  |
Payments of Dividends |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Cash dividends paid to Parent |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Intercompany loans payable1 |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | (106,500,000) |  |  |  |  |
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  |  | (105,300,000) |  | (119,000,000.0) |  | (11,700,000) |  |  |  |  |
Net increase (decrease) in cash, cash equivalents and restricted cash during the period |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Cash, cash equivalents and restricted cash at beginning of period |  |  |  |  | 0 |  |  |  | 0 | 0 |  | 0 |  | 0 |  |  |  |  |
Cash, cash equivalents and restricted cash at end of period |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 1,547,000,000.0 |  | 1,365,300,000 |  | 1,301,600,000 |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | 122,600,000 |  |  |  | 48,400,000 |  |  |  | 122,600,000 |  | 48,400,000 |  |  |  |  |  |  |
Short-term investments |  | 36,700,000 |  |  |  | 183,700,000 |  |  |  | 36,700,000 |  | 183,700,000 |  |  |  |  |  |  |
Receivables: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade, less allowance for doubtful receivables |  | 174,000,000.0 |  |  |  | 160,100,000 |  |  |  | 174,000,000.0 |  | 160,100,000 |  |  |  |  |  |  |
Intercompany receivables |  | 100,000 |  |  |  | 100,000 |  |  |  | 100,000 |  | 100,000 |  |  |  |  |  |  |
Other |  | 23,300,000 |  |  |  | 14,700,000 |  |  |  | 23,300,000 |  | 14,700,000 |  |  |  |  |  |  |
Contract assets |  | 52,000,000.0 |  |  |  |  |  |  |  | 52,000,000.0 |  |  |  |  |  |  |  |  |
Inventories |  | 203,000,000.0 |  |  |  | 198,700,000 |  |  |  | 203,000,000.0 |  | 198,700,000 |  |  |  |  |  |  |
Prepaid expenses and other current assets |  | 18,400,000 |  |  |  | 32,900,000 |  |  |  | 18,400,000 |  | 32,900,000 |  |  |  |  |  |  |
Total current assets |  | 630,100,000 |  |  |  | 638,600,000 |  |  |  | 630,100,000 |  | 638,600,000 |  |  |  |  |  |  |
Investments in and advances to unconsolidated affiliates |  | 94,900,000 |  |  |  | 48,200,000 |  |  |  | 94,900,000 |  | 48,200,000 |  |  |  |  |  |  |
Property, plant and equipment, net |  | 577,400,000 |  |  |  | 541,200,000 |  |  |  | 577,400,000 |  | 541,200,000 |  |  |  |  |  |  |
Long-term intercompany receivables |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Deferred tax assets, net |  | 32,900,000 |  |  |  | 67,300,000 |  |  |  | 32,900,000 |  | 67,300,000 |  |  |  |  |  |  |
Intangible assets, net |  | 23,600,000 |  |  |  | 25,000,000.0 |  |  |  | 23,600,000 |  | 25,000,000.0 |  |  |  |  |  |  |
Goodwill |  | 18,800,000 |  |  |  | 18,800,000 |  |  |  | 18,800,000 |  | 18,800,000 |  |  |  |  |  |  |
Other assets |  | 38,600,000 |  |  |  | 41,400,000 |  |  |  | 38,600,000 |  | 41,400,000 |  |  |  |  |  |  |
Total |  | 1,416,300,000 |  |  |  | 1,380,500,000 |  |  |  | 1,416,300,000 |  | 1,380,500,000 |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable |  | 109,600,000 |  |  |  | 81,400,000 |  |  |  | 109,600,000 |  | 81,400,000 |  |  |  |  |  |  |
Intercompany payable |  | 148,000,000.0 |  |  |  | 23,500,000 |  |  |  | 148,000,000.0 |  | 23,500,000 |  |  |  |  |  |  |
Accrued salaries, wages and related expenses |  | 38,300,000 |  |  |  | 41,000,000.0 |  |  |  | 38,300,000 |  | 41,000,000.0 |  |  |  |  |  |  |
Other accrued liabilities |  | 46,700,000 |  |  |  | 46,200,000 |  |  |  | 46,700,000 |  | 46,200,000 |  |  |  |  |  |  |
Total current liabilities |  | 342,600,000 |  |  |  | 192,100,000 |  |  |  | 342,600,000 |  | 192,100,000 |  |  |  |  |  |  |
Net liabilities of Salaried VEBA |  | 32,400,000 |  |  |  | 31,900,000 |  |  |  | 32,400,000 |  | 31,900,000 |  |  |  |  |  |  |
Deferred tax liabilities |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Long-term intercompany payable |  | 9,800,000 |  |  |  | 12,400,000 |  |  |  | 9,800,000 |  | 12,400,000 |  |  |  |  |  |  |
Long-term liabilities |  | 63,300,000 |  |  |  | 58,000,000.0 |  |  |  | 63,300,000 |  | 58,000,000.0 |  |  |  |  |  |  |
Long-term debt |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Total liabilities |  | 448,100,000 |  |  |  | 294,400,000 |  |  |  | 448,100,000 |  | 294,400,000 |  |  |  |  |  |  |
Total stockholders' equity |  | 968,200,000 |  |  |  | 1,086,100,000 |  |  |  | 968,200,000 |  | 1,086,100,000 |  |  |  |  |  |  |
Total liabilities and stockholders' equity |  | 1,416,300,000 |  |  |  | 1,380,500,000 |  |  |  | 1,416,300,000 |  | 1,380,500,000 |  |  |  |  |  |  |
Costs and expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of Goods and Services Sold |  |  |  |  |  |  |  |  |  | 1,271,200,000 |  | 1,066,100,000 |  | 981,900,000 |  |  |  |  |
Lower of cost or market inventory write-down |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,900,000 |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 41,300,000 |  | 37,500,000 |  | 34,000,000.0 |  |  |  |  |
Selling, general, administrative, research and development |  |  |  |  |  |  |  |  |  | 88,500,000 |  | 88,300,000 |  | 95,000,000.0 |  |  |  |  |
Goodwill impairment |  |  |  |  |  |  |  |  |  |  |  | 18,400,000 |  |  |  |  |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  |  | 1,300,000 |  | 800,000 |  | 2,800,000 |  |  |  |  |
Total costs and expenses |  |  |  |  |  |  |  |  |  | 1,402,300,000 |  | 1,211,100,000 |  | 1,118,600,000 |  |  |  |  |
Operating (loss) income |  |  |  |  |  |  |  |  |  | 144,700,000 |  | 154,200,000 |  | 183,000,000.0 |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  | (2,200,000) |  | (1,700,000) |  | 1,200,000 |  |  |  |  |
Other expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income, net |  |  |  |  |  |  |  |  |  | (400,000) |  | (500,000) |  | (2,400,000) |  |  |  |  |
(Loss) income before income taxes |  |  |  |  |  |  |  |  |  | 142,100,000 |  | 152,000,000.0 |  | 181,800,000 |  |  |  |  |
Income tax provision |  |  |  |  |  |  |  |  |  | (32,900,000) |  | (95,200,000) |  | (69,000,000.0) |  |  |  |  |
Earnings in equity of subsidiaries |  |  |  |  |  |  |  |  |  | 2,100,000 |  | 4,300,000 |  | 1,700,000 |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | 111,300,000 |  | 61,100,000 |  | 114,500,000 |  |  |  |  |
Comprehensive income |  |  |  |  |  |  |  |  |  | 99,600,000 |  | 61,100,000 |  | 109,800,000 |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  | 166,600,000 |  | 156,900,000 |  | 178,700,000 |  |  |  |  |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  | (68,000,000.0) |  | (74,700,000) |  | (74,000,000.0) |  |  |  |  |
Purchase of available for sale securities |  |  |  |  |  |  |  |  |  | (135,200,000) |  | (247,500,000) |  | (255,300,000) |  |  |  |  |
Payments to Acquire Available-for-sale Securities, Equity |  |  |  |  |  |  |  |  |  | (900,000) |  |  |  |  |  |  |  |  |
Proceeds from disposition of available for sale securities |  |  |  |  |  |  |  |  |  | 283,900,000 |  | 296,900,000 |  | 55,000,000.0 |  |  |  |  |
Cash payment for acquisition of Imperial Machine & Tool Co., net of cash received |  |  |  |  |  |  |  |  |  | (43,200,000) |  |  |  |  |  |  |  |  |
Proceeds from disposal of property, plant and equipment |  |  |  |  |  |  |  |  |  | 600,000 |  | 600,000 |  |  |  |  |  |  |
Intercompany loans receivable |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 110,400,000 |  |  |  |  |
Net cash provided by (used in) investing activities |  |  |  |  |  |  |  |  |  | 37,200,000 |  | (24,700,000) |  | (163,900,000) |  |  |  |  |
Repayment of principal and redemption premium of 8.25% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Issuance of 5.875% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Cash paid for debt issuance costs |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Proceeds from stock option exercises |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Repayment of capital lease |  |  |  |  |  |  |  |  |  | (700,000) |  | (400,000) |  |  |  |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Repurchase of common stock |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Cash dividends and dividend equivalents paid |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Payments of Dividends |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000,000.0 |  |  |  |  |
Cash dividends paid to Parent |  |  |  |  |  |  |  |  |  | (250,000,000.0) |  |  |  |  |  |  |  |  |
Intercompany loans payable1 |  |  |  |  |  |  |  |  |  | 121,900,000 |  | (135,600,000) |  | 167,300,000 |  |  |  |  |
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  |  | (128,800,000) |  | (136,000,000.0) |  | (32,700,000) |  |  |  |  |
Net increase (decrease) in cash, cash equivalents and restricted cash during the period |  |  |  |  |  |  |  |  |  | 75,000,000.0 |  | (3,800,000) |  | (17,900,000) |  |  |  |  |
Cash, cash equivalents and restricted cash at beginning of period |  |  |  |  | 61,300,000 |  |  |  | 65,100,000 | 61,300,000 |  | 65,100,000 |  | 83,000,000.0 |  |  |  |  |
Cash, cash equivalents and restricted cash at end of period |  | 136,300,000 |  |  |  | 61,300,000 |  |  |  | 136,300,000 |  | 61,300,000 |  | 65,100,000 |  |  |  |  |
Non-Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 138,100,000 |  | 115,700,000 |  | 103,400,000 |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | 3,000,000.0 |  |  |  | 2,700,000 |  |  |  | 3,000,000.0 |  | 2,700,000 |  |  |  |  |  |  |
Short-term investments |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Receivables: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade, less allowance for doubtful receivables |  | 5,800,000 |  |  |  | 4,900,000 |  |  |  | 5,800,000 |  | 4,900,000 |  |  |  |  |  |  |
Intercompany receivables |  | 4,300,000 |  |  |  | 700,000 |  |  |  | 4,300,000 |  | 700,000 |  |  |  |  |  |  |
Other |  | 2,300,000 |  |  |  | 800,000 |  |  |  | 2,300,000 |  | 800,000 |  |  |  |  |  |  |
Contract assets |  | 2,900,000 |  |  |  |  |  |  |  | 2,900,000 |  |  |  |  |  |  |  |  |
Inventories |  | 12,100,000 |  |  |  | 9,200,000 |  |  |  | 12,100,000 |  | 9,200,000 |  |  |  |  |  |  |
Prepaid expenses and other current assets |  | 400,000 |  |  |  | 400,000 |  |  |  | 400,000 |  | 400,000 |  |  |  |  |  |  |
Total current assets |  | 30,800,000 |  |  |  | 18,700,000 |  |  |  | 30,800,000 |  | 18,700,000 |  |  |  |  |  |  |
Investments in and advances to unconsolidated affiliates |  | 200,000 |  |  |  | 0 |  |  |  | 200,000 |  | 0 |  |  |  |  |  |  |
Property, plant and equipment, net |  | 34,400,000 |  |  |  | 30,200,000 |  |  |  | 34,400,000 |  | 30,200,000 |  |  |  |  |  |  |
Long-term intercompany receivables |  | 9,800,000 |  |  |  | 12,400,000 |  |  |  | 9,800,000 |  | 12,400,000 |  |  |  |  |  |  |
Deferred tax assets, net |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Intangible assets, net |  | 8,800,000 |  |  |  | 0 |  |  |  | 8,800,000 |  | 0 |  |  |  |  |  |  |
Goodwill |  | 25,200,000 |  |  |  | 0 |  |  |  | 25,200,000 |  | 0 |  |  |  |  |  |  |
Other assets |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Total |  | 109,200,000 |  |  |  | 61,300,000 |  |  |  | 109,200,000 |  | 61,300,000 |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable |  | 6,900,000 |  |  |  | 6,700,000 |  |  |  | 6,900,000 |  | 6,700,000 |  |  |  |  |  |  |
Intercompany payable |  | 100,000 |  |  |  | 100,000 |  |  |  | 100,000 |  | 100,000 |  |  |  |  |  |  |
Accrued salaries, wages and related expenses |  | 1,800,000 |  |  |  | 1,600,000 |  |  |  | 1,800,000 |  | 1,600,000 |  |  |  |  |  |  |
Other accrued liabilities |  | 800,000 |  |  |  | 1,000,000.0 |  |  |  | 800,000 |  | 1,000,000.0 |  |  |  |  |  |  |
Total current liabilities |  | 9,600,000 |  |  |  | 9,400,000 |  |  |  | 9,600,000 |  | 9,400,000 |  |  |  |  |  |  |
Net liabilities of Salaried VEBA |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Deferred tax liabilities |  | 4,200,000 |  |  |  | 4,300,000 |  |  |  | 4,200,000 |  | 4,300,000 |  |  |  |  |  |  |
Long-term intercompany payable |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Long-term liabilities |  | 3,100,000 |  |  |  | 2,000,000.0 |  |  |  | 3,100,000 |  | 2,000,000.0 |  |  |  |  |  |  |
Long-term debt |  | 0 |  |  |  | 0 |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Total liabilities |  | 16,900,000 |  |  |  | 15,700,000 |  |  |  | 16,900,000 |  | 15,700,000 |  |  |  |  |  |  |
Total stockholders' equity |  | 92,300,000 |  |  |  | 45,600,000 |  |  |  | 92,300,000 |  | 45,600,000 |  |  |  |  |  |  |
Total liabilities and stockholders' equity |  | 109,200,000 |  |  |  | 61,300,000 |  |  |  | 109,200,000 |  | 61,300,000 |  |  |  |  |  |  |
Costs and expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of Goods and Services Sold |  |  |  |  |  |  |  |  |  | 126,000,000.0 |  | 101,100,000 |  | 90,000,000.0 |  |  |  |  |
Lower of cost or market inventory write-down |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 2,600,000 |  | 2,200,000 |  | 2,000,000.0 |  |  |  |  |
Selling, general, administrative, research and development |  |  |  |  |  |  |  |  |  | 5,700,000 |  | 6,900,000 |  | 8,400,000 |  |  |  |  |
Goodwill impairment |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  |  | 100,000 |  | 0 |  | 0 |  |  |  |  |
Total costs and expenses |  |  |  |  |  |  |  |  |  | 134,400,000 |  | 110,200,000 |  | 100,400,000 |  |  |  |  |
Operating (loss) income |  |  |  |  |  |  |  |  |  | 3,700,000 |  | 5,500,000 |  | 3,000,000.0 |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Other expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income, net |  |  |  |  |  |  |  |  |  | 100,000 |  | 700,000 |  | 0 |  |  |  |  |
(Loss) income before income taxes |  |  |  |  |  |  |  |  |  | 3,800,000 |  | 6,200,000 |  | 3,000,000.0 |  |  |  |  |
Income tax provision |  |  |  |  |  |  |  |  |  | (1,700,000) |  | (1,900,000) |  | (600,000) |  |  |  |  |
Earnings in equity of subsidiaries |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | 2,100,000 |  | 4,300,000 |  | 2,400,000 |  |  |  |  |
Comprehensive income |  |  |  |  |  |  |  |  |  | 2,100,000 |  | 4,300,000 |  | 2,100,000 |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  | 7,400,000 |  | 8,800,000 |  | 9,200,000 |  |  |  |  |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  |  | (6,100,000) |  | (800,000) |  | (2,100,000) |  |  |  |  |
Purchase of available for sale securities |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Payments to Acquire Available-for-sale Securities, Equity |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Proceeds from disposition of available for sale securities |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Cash payment for acquisition of Imperial Machine & Tool Co., net of cash received |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Proceeds from disposal of property, plant and equipment |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Intercompany loans receivable |  |  |  |  |  |  |  |  |  | (1,000,000.0) |  | (7,600,000) |  | (1,300,000) |  |  |  |  |
Net cash provided by (used in) investing activities |  |  |  |  |  |  |  |  |  | (7,100,000) |  | (8,400,000) |  | (3,400,000) |  |  |  |  |
Repayment of principal and redemption premium of 8.25% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Issuance of 5.875% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Cash paid for debt issuance costs |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Proceeds from stock option exercises |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Repayment of capital lease |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |  |  |  |  |
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Repurchase of common stock |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Cash dividends and dividend equivalents paid |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  |  |  |  |
Payments of Dividends |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Cash dividends paid to Parent |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |
Intercompany loans payable1 |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | (3,900,000) |  |  |  |  |
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | (3,900,000) |  |  |  |  |
Net increase (decrease) in cash, cash equivalents and restricted cash during the period |  |  |  |  |  |  |  |  |  | 300,000 |  | 400,000 |  | 1,900,000 |  |  |  |  |
Cash, cash equivalents and restricted cash at beginning of period |  |  |  |  | $ 3,000,000.0 |  |  |  | $ 2,600,000 | 3,000,000.0 |  | 2,600,000 |  | 700,000 |  |  |  |  |
Cash, cash equivalents and restricted cash at end of period |  | $ 3,300,000 |  |  |  | $ 3,000,000.0 |  |  |  | $ 3,300,000 |  | $ 3,000,000.0 |  | $ 2,600,000 |  |  |  |  |
Senior Notes | Senior Notes Due 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 375,000,000.0 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.875% |
Senior Notes | Senior Notes Due 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 225,000,000.0
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.25%
Current liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 197,800,000 |  |
[1] | See Note 7 for discussion of our adoption of ASU 2017-12 (as defined in Note 1) and the related reclassification of amounts previously presented in the Statements of Consolidated Income within Unrealized (gain) loss on derivative instruments and now included within Cost of products sold, excluding depreciation and amortization and other items.
[2] | See Note 1 for discussion of our adoption of ASU 2017-07 (as defined in Note 1) and the related reclassification of amounts previously presented in the Statements of Consolidated Income within Selling, general, administrative, research and development and now included within Other expense, net.
[3] | See Note 11 for adjustments made to arrive at our Consolidated Balance Sheet as of January 1, 2018 upon adopting ASC 606 (as defined in Note 1).
[4] | See Note 15 for supplemental disclosure on non-cash transactions.

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