Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Retained Deficit	Accumulated Other Comprehensive (Loss) Income
Balance (in shares) at Dec. 31, 2021		37,373,066
Balance at Dec. 31, 2021	$ 725,362	$ 7	$ 862,040	$ (166,663)	$ 29,978
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	17,869			17,869
Other comprehensive (loss) income	(144,571)				(144,571)
Vesting of RSUs (in shares)		77,198
Vesting of RSUs	(941)		(941)
Compensation expense under share incentive plans	3,982		3,982
Dividends on Series A preferred shares	(3,500)			(3,500)
Dividends on common shares	(3,815)			(3,815)
Balance (in shares) at Jun. 30, 2022		37,450,264
Balance at Jun. 30, 2022	594,386	$ 7	865,081	(156,109)	(114,593)
Balance (in shares) at Mar. 31, 2022		37,448,314
Balance at Mar. 31, 2022	647,677	$ 7	862,904	(159,241)	(55,993)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	7,664			7,664
Other comprehensive (loss) income	(58,600)				(58,600)
Vesting of RSUs (in shares)		1,950
Vesting of RSUs	(19)		(19)
Compensation expense under share incentive plans	2,196		2,196
Dividends on Series A preferred shares	(2,625)			(2,625)
Dividends on common shares	(1,907)			(1,907)
Balance (in shares) at Jun. 30, 2022		37,450,264
Balance at Jun. 30, 2022	$ 594,386	$ 7	865,081	(156,109)	(114,593)
Balance (in shares) at Dec. 31, 2022	37,470,237	37,470,237
Balance at Dec. 31, 2022	$ 553,766	$ 7	868,858	(152,055)	(163,044)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	33,301			33,301
Other comprehensive (loss) income	14,445				14,445
Vesting of RSUs (in shares)		148,989
Vesting of RSUs	(1,507)		(1,507)
Compensation expense under share incentive plans	5,008		5,008
Dividends on Series A preferred shares	(5,250)			(5,250)
Dividends on common shares	$ (3,840)			(3,840)
Balance (in shares) at Jun. 30, 2023	37,619,226	37,619,226
Balance at Jun. 30, 2023	$ 595,923	$ 7	872,359	(127,844)	(148,599)
Balance (in shares) at Mar. 31, 2023		37,619,226
Balance at Mar. 31, 2023	590,915	$ 7	870,043	(146,993)	(132,142)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	23,693			23,693
Other comprehensive (loss) income	(16,457)				(16,457)
Compensation expense under share incentive plans	2,316		2,316
Dividends on Series A preferred shares	(2,625)			(2,625)
Dividends on common shares	$ (1,919)			(1,919)
Balance (in shares) at Jun. 30, 2023	37,619,226	37,619,226
Balance at Jun. 30, 2023	$ 595,923	$ 7	$ 872,359	$ (127,844)	$ (148,599)