Earnings Per Share (Details) $ / shares in Units, $ in Thousands		3 Months Ended				6 Months Ended
	Jan. 17, 2022	Jun. 30, 2022 USD ($) $ / shares shares		Jun. 30, 2021 USD ($) $ / shares shares		Jun. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2021 USD ($) $ / shares shares
Net Income
Net income | $		$ 53,935		$ 51,417		$ 104,077	$ 113,400
Dividends on preferred stock | $		(5,729)		(5,659)		(11,457)	(9,416)
Net Income Allocated to Common Shareholders | $		$ 48,206		$ 45,758		$ 92,620	$ 103,984
Weighted-Average Shares
Weighted average shares - Basic | shares		43,209,824	[1]	43,174,220	[1]	43,220,198	43,166,223
Effect of dilutive securities-restricted stock awards | shares		125,387	[1]	137,268	[1]	147,677	127,376
Weighted average shares - diluted | shares		43,335,211	[1]	43,311,488	[1]	43,367,875	43,293,599
Per Share Amount
Basic earnings per share | $ / shares		$ 1.12	[1]	$ 1.06	[1]	$ 2.14	$ 2.41
Diluted earnings per share | $ / shares		$ 1.11	[1]	$ 1.06	[1]	$ 2.14	$ 2.40
Other disclosures
Stock split ratio	1.5

[1] The number of shares and per share amounts have been restated to reflect the 3-for-2 common stock split, effective on January 17, 2022