Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Cumulative Distributions in Excess of Earnings
Beginning balance at Dec. 31, 2018	$ 768,247	$ 859	$ 965,578	$ (198,190)
Beginning balance (shares) at Dec. 31, 2018		85,867,044
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net	195,924	$ 91	195,833
Issuance of common stock, net (shares)		9,100,250
Vesting of restricted common stock, net of shares withheld for employee taxes	(2,524)	$ 1	(2,525)
Vesting of restricted common stock, net of shares withheld for employee taxes (shares)		135,976
Amortization of stock-based compensation	4,104		4,104
Common dividends ($1.06, $1.00 and $0.90 per share for the years ended 2021, 2020 and 2019, respectively)	(84,519)			(84,519)
Net income	46,359			46,359
Ending balance at Dec. 31, 2019	927,591	$ 951	1,162,990	(236,350)
Ending balance (shares) at Dec. 31, 2019		95,103,270
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net	(404)		(404)
Vesting of restricted common stock, net of shares withheld for employee taxes	(1,995)	$ 1	(1,996)
Vesting of restricted common stock, net of shares withheld for employee taxes (shares)		112,527
Amortization of stock-based compensation	3,812		3,812
Common dividends ($1.06, $1.00 and $0.90 per share for the years ended 2021, 2020 and 2019, respectively)	(95,729)			(95,729)
Net income	80,867			80,867
Ending balance at Dec. 31, 2020	914,142	$ 952	1,164,402	(251,212)
Ending balance (shares) at Dec. 31, 2020		95,215,797
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net	22,946	$ 10	22,936
Issuance of common stock, net (shares)		990,000
Vesting of restricted common stock, net of shares withheld for employee taxes	(1,330)	$ 1	(1,331)
Vesting of restricted common stock, net of shares withheld for employee taxes (shares)		90,876
Amortization of stock-based compensation	10,832		10,832
Common dividends ($1.06, $1.00 and $0.90 per share for the years ended 2021, 2020 and 2019, respectively)	(102,815)			(102,815)
Net income	71,982			71,982
Ending balance at Dec. 31, 2021	$ 915,757	$ 963	$ 1,196,839	$ (282,045)
Ending balance (shares) at Dec. 31, 2021		96,296,673