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.