Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net income	$ 19,064	$ 47,014	$ 38,670	$ 93,072
Preferred dividends	(1,037)	0	(1,037)	0
Net income applicable to unvested restricted shares	(187)	(389)	(379)	(792)
Net income applicable to common shares	$ 17,840	$ 46,625	$ 37,254	$ 92,280
Weighted-average common shares outstanding:
Weighted-average common shares outstanding (basic) (in Shares)	113,145	108,467	111,533	107,126
Dilutive effect of common stock equivalents (in Shares)	191	0	339	0
Weighted-average diluted common shares outstanding (in Shares)	113,336	108,467	111,872	107,126
Basic EPS (in dollars per share)	$ 0.16	$ 0.43	$ 0.33	$ 0.86
Diluted EPS (in dollars per share)	$ 0.16	$ 0.43	$ 0.33	$ 0.86