Earnings Per Share - Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Diluted earnings per share - Numerator:
Net income attributable to common shareholders, after assumed dilution	$ 10,652	$ 1,214
Diluted earnings per share - Denominator:
Weighted average basic common shares outstanding (in shares)	82,429,162	83,005,064
Diluted effect of: Time-based and market-based stock options, and performance-based and time-based restricted stock units, and other dilutive securities (in shares)	1,504,945	312,977
Weighted average diluted common shares outstanding (in shares)	83,934,107	83,318,041
Per share data - Diluted earnings per share:
Total attributable to common shareholders (in dollars per share)	$ 0.13	$ 0.01
Dividends per share declared and paid on common stock (in dollars per share)	$ 0.06	$ 0.12