Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Retained (Deficit) Earnings	Accumulated Other Comprehensive (Loss) Income
Balance (in shares) at Dec. 31, 2020		30,649,261
Balance at Dec. 31, 2020	$ 795,608	$ 6	$ 664,476	$ 49,227	$ 81,899
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(82,617)			(82,617)
Other comprehensive loss	(27,330)				(27,330)
Issuance of common shares (in shares)		6,497,500
Issuance of common shares	192,107	$ 1	192,106
Exercise of stock options (in shares)		16,471
Exercise of stock options	159		159
Vesting of RSUs (in shares)		112,330
Vesting of RSUs	(2,592)		(2,592)
Compensation expense under share incentive plans	3,767		3,767
Dividends on common shares	(20,603)			(20,603)
Balance (in shares) at Jun. 30, 2021		37,275,562
Balance at Jun. 30, 2021	858,499	$ 7	857,916	(53,993)	54,569
Balance (in shares) at Mar. 31, 2021		30,774,930
Balance at Mar. 31, 2021	639,628	$ 6	663,987	(63,576)	39,211
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	20,843			20,843
Other comprehensive loss	15,358				15,358
Issuance of common shares (in shares)		6,497,500
Issuance of common shares	192,107	$ 1	192,106
Vesting of RSUs (in shares)		3,132
Vesting of RSUs	(39)		(39)
Compensation expense under share incentive plans	1,862		1,862
Dividends on common shares	(11,260)			(11,260)
Balance (in shares) at Jun. 30, 2021		37,275,562
Balance at Jun. 30, 2021	$ 858,499	$ 7	857,916	(53,993)	54,569
Balance (in shares) at Dec. 31, 2021	37,373,066	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 (loss)	17,869			17,869
Other comprehensive loss	(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	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 (loss)	7,664			7,664
Other comprehensive loss	(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	37,450,264
Balance at Jun. 30, 2022	$ 594,386	$ 7	$ 865,081	$ (156,109)	$ (114,593)