Impact of stock-based compensation expense on basic and diluted earnings per share.

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Represents the percentage of achievement of the predefined revenue and ROIC targets.

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Represents the percentage of achievement rate for performance units that is used as basis of payouts under the plan.

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No definition available.

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This element represents the period of time over which the entity's performance is evaluated for purposes of calculating the number of performance shares earned.

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No definition available.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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No definition available.

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No definition available.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of share options (or share units) exercised during the current period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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Summary of Significant Accounting Policies - Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Employee stock-based awards
Weighted Average Common Shares Outstanding-Basic (in shares)	286,159,000	265,198,000	285,801,000	264,423,000
Stock-based compensation	$ 7,279	$ 7,761	$ 23,352	$ 22,853
Stock-based compensation expense (income), net of tax	$ 6,734	$ 6,851	$ 21,599	$ 20,174
Stock-based compensation expense per basic and diluted share (in dollars per share)	$ 0.02	$ 0.03	$ 0.08	$ 0.08
Share-Based Compensation, aggregate disclosures
Employee stock-based awards, unrecognized compensation costs on nonvested awards	$ 50,089		$ 50,089
Employee stock-based awards, unrecognized compensation costs on nonvested awards, weighted average period of recognition			2 years
Continuing Operations
Employee stock-based awards
Stock-based compensation	7,279	$ 7,761	$ 23,352	$ 22,853
Continuing Operations \| Cost of sales (excluding depreciation and amortization)
Employee stock-based awards
Stock-based compensation	29	25	87	80
Continuing Operations \| Selling, general and administrative expenses
Employee stock-based awards
Stock-based compensation	$ 7,250	7,736	$ 23,265	22,773
Stock Options
Summary of option activity
Options outstanding balance, beginning of period (in shares)			3,671,740
Options granted (in shares)			846,517
Options exercised (in shares)			(163,418)
Options forfeited (in shares)			(38,533)
Options expired (in shares)			(16,062)
Options outstanding balance, end of period (in shares)	4,300,244		4,300,244
Options exercisable balance (in shares)	2,388,037		2,388,037
Options expected to vest (in shares)	1,817,579		1,817,579
Performance units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)			467,811
Granted (in shares)			353,507
Vested (in shares)			(81,305)
Forfeited (in shares)			(66,394)
Non-vested at the end of the period (in shares)	673,619		673,619
Total fair value of shares or units vested	$ 84	52	$ 3,117	957
Performance units \| Two Thousand Sixteen [Member] [Member]
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets	65.00%		65.00%
Performance units \| Two Thousand Seventeen [Member]
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets	110.00%		110.00%
Performance units \| Two Thousand Eighteen [Member]
Performance units disclosure
Percentage of achievement of the predefined revenue and ROIC targets	100.00%		100.00%
Performance units \| Revenue or revenue growth and return on invested capital
Performance units disclosure
Performance period			3 years
Performance units \| Minimum \| Revenue or revenue growth and return on invested capital
Performance units disclosure
Percentage payout rate	0.00%		0.00%
Performance units \| Minimum \| Market condition associated with shareholder return of common stock
Performance units disclosure
Percentage payout rate	0.00%		0.00%
Performance units \| Maximum \| Revenue or revenue growth and return on invested capital
Performance units disclosure
Percentage payout rate	200.00%		200.00%
Performance units \| Maximum \| Market condition associated with shareholder return of common stock
Performance units disclosure
Percentage payout rate	200.00%		200.00%
Original PU Awards
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)			717,878
Granted (in shares)			353,507
Vested (in shares)			(81,305)
Forfeited (in shares)			(16,513)
Non-vested at the end of the period (in shares)	973,567		973,567
PUs Adjustment
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)			(250,067)
Granted (in shares)			0
Vested (in shares)			0
Forfeited (in shares)			(49,881)
Non-vested at the end of the period (in shares)	(299,948)		(299,948)
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options
Non-vested at the beginning of the period (in shares)			1,071,469
Granted (in shares)			746,704
Vested (in shares)			(546,299)
Forfeited (in shares)			(79,140)
Non-vested at the end of the period (in shares)	1,192,734		1,192,734
Total fair value of shares or units vested	$ 3,189	$ 1,933	$ 19,195	$ 18,006