Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share Reconciliation
Net income available to common shareholders	$ 99,202	$ 78,719	$ 275,727	$ 262,173
Basic weighted average number of common shares outstanding (in shares)	403,833,469	331,797,982	403,714,701	331,716,652
Plus: Common stock equivalents (in shares)	955,057	1,607,214	1,197,425	1,322,784
Diluted weighted average number of common shares outstanding (in shares)	404,788,526	333,405,196	404,912,126	333,039,436
Earnings per common share:
Basic (usd per share)	$ 0.25	$ 0.24	$ 0.68	$ 0.79
Diluted (usd per share)	$ 0.25	$ 0.24	$ 0.68	$ 0.79
Anti-dilutive common stock options and warrants (in shares)	4,900,000	265,000	2,200,000	475,000