Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share Reconciliation
Net income available to common shareholders	$ 92,429	$ 73,296	$ 176,525	$ 183,454
Basic weighted average number of common shares outstanding (in shares)	403,790,242	331,748,552	403,654,665	331,675,313
Plus: Common stock equivalents (in shares)	841,603	1,211,250	1,388,518	1,254,046
Diluted weighted average number of common shares outstanding (in shares)	404,631,845	332,959,802	405,043,183	332,929,359
Earnings per common share:
Basic (usd per share)	$ 0.23	$ 0.22	$ 0.44	$ 0.55
Diluted (usd per share)	$ 0.23	$ 0.22	$ 0.44	$ 0.55
Anti-dilutive common stock options and warrants (in shares)	2,700,000	482,000	2,300,000	494,000