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Shareholders' Equity - Shares Reserved for Future Issuance (Details) shares in Thousands	Jun. 30, 2019 shares
Class of Stock [Line Items]
For exercise of outstanding common stock options (shares)	2,418
For vesting of outstanding stock units (shares)	3,081
Total common shares reserved (shares)	12,949
2013 Long-Term Incentive Compensation Plan
Class of Stock [Line Items]
For future issuance (shares)	6,014
Non-Employee Director Stock Compensation and Deferral Program
Class of Stock [Line Items]
For future issuance (shares)	52

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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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Aggregate number of common shares reserved for future issuance.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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

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