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Stockholders' Equity Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Document Period End Date			Sep. 30, 2019
Weighted average number of shares outstanding - basic	54,449,256	51,182,502	53,180,850	51,436,228
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	1,522,805	1,521,560	1,441,369	1,525,204
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	0	1,559,830	0	1,559,830
Weighted Average Number of Shares Outstanding, Diluted	55,972,061	54,263,892	54,622,219	54,521,262

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The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the 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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