CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]
Beginning Balance at Dec. 31, 2019		$ 1,210,741	$ (10,259)	$ 738,802
Beginning Balance (in shares) at Dec. 31, 2019		67,176,996
Issuance of common stock through equity compensation plans		$ 965
Shares issued through equity compensation plans		139,726
Issuance of common stock through Employee Investment Plan		$ 674
Shares issued through Employee Investment Plan		17,179
Issuance of common stock through sales agency agreements, net of issuance costs		$ 70,561
Shares issued through sales agency agreements		1,905,000
Equity compensation expense		$ 5,535
Payment of minimum tax withholdings for share-based payment awards		(2,408)
Other comprehensive income (loss)	$ (4,119)		(4,119)
Net income	129,488			129,488
Dividends on common stock				(110,254)
Ending Balance at Dec. 31, 2020	$ 2,029,726	$ 1,286,068	(14,378)	758,036
Ending Balance (in shares) at Dec. 31, 2020		69,238,901
Dividends declared per common share	$ 1.62
Issuance of common stock through equity compensation plans		$ 931
Shares issued through equity compensation plans		93,806
Issuance of common stock through Employee Investment Plan		$ 610
Shares issued through Employee Investment Plan		14,480
Issuance of common stock through sales agency agreements, net of issuance costs		$ 88,457
Shares issued through sales agency agreements		2,150,336
Equity compensation expense		$ 5,079
Payment of minimum tax withholdings for share-based payment awards		(993)
Other comprehensive income (loss)	$ 3,339		3,339
Net income	147,334			147,334
Dividends on common stock				(119,739)
Ending Balance at Dec. 31, 2021	$ 2,154,744	$ 1,380,152	(11,039)	785,631
Ending Balance (in shares) at Dec. 31, 2021	71,497,523	71,497,523
Dividends declared per common share	$ 1.69
Issuance of common stock through equity compensation plans		$ 1,150
Shares issued through equity compensation plans		123,631
Issuance of common stock through Employee Investment Plan		$ 605
Shares issued through Employee Investment Plan		14,306
Issuance of common stock through sales agency agreements, net of issuance costs		$ 137,173
Shares issued through sales agency agreements		3,310,488
Equity compensation expense		$ 7,567
Payment of minimum tax withholdings for share-based payment awards		(1,462)
Other comprehensive income (loss)	$ 8,981		8,981
Net income	155,176			155,176
Dividends on common stock				(129,266)
Ending Balance at Dec. 31, 2022	$ 2,334,668	$ 1,525,185	$ (2,058)	$ 811,541
Ending Balance (in shares) at Dec. 31, 2022	74,945,948	74,945,948
Dividends declared per common share	$ 1.76