Earnings Per Share Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Diluted earnings per share - Numerator:
Net income attributable to common shareholders, after assumed dilution	$ 1,214	$ 20,999
Diluted earnings per share - Denominator:
Weighted average basic common shares outstanding (in shares)	83,005,064	83,285,095
Dilutive effect of:
Time-based and market-based stock options, performance-based and time-based restricted stock, and performance-based and time-based restricted stock units, and other dilutive securities (in shares)	312,977	725,355
Dilutive common shares (in shares)	312,977	725,355
Weighted average diluted common shares outstanding (in shares)	83,318,041	84,010,450
Per share data - Diluted earnings per share:
Total attributable to common shareholders (in dollars per share)	$ 0.01	$ 0.25
Dividends per share declared and paid on common stock (in dollars per share)	$ 0.12	$ 0.12

Aggregate dividends paid during the period for each share of common stock outstanding.

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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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