Subsequent Events (Details)	1 Months Ended			9 Months Ended
	Dec. 31, 2022 USD ($) $ / shares	Nov. 30, 2022 USD ($) $ / shares	Oct. 31, 2022 USD ($) $ / shares	Sep. 30, 2022 USD ($) item property shares	Sep. 30, 2021 USD ($)	Oct. 29, 2022 USD ($)	Dec. 31, 2021 USD ($)
Real Estate Investments
Lease renewal term				5 years
Number of Units in Real Estate Property | item				217
Deferred rent				$ 22,253,000			$ 24,146,000
Debt:
Amount borrowed				194,000,000	$ 92,500,000
Repayment paid				153,900,000	48,000,000
Term loans, net of debt issue cost				793,761,000			722,719,000
Available for borrowing				249,000,000			289,100,000
Unsecured revolving line of credit				151,000,000			110,900,000
Equity
Proceeds from common stock issued				$ 38,957,000
Common Stock | Equity Distribution Agreements
Equity
Shares common stock sold | shares				1,035,000
Proceeds from common stock issued				$ 38,957,000
Revolving line of credit
Debt:
Amount borrowed				194,000,000	92,500,000
Repayment paid				153,900,000	$ 48,000,000
Term loans, net of debt issue cost				151,000,000			110,900,000
Available for borrowing				249,000,000			289,100,000
Senior Unsecured Notes
Debt:
Term loans, net of debt issue cost				$ 543,287,000			$ 512,456,000
ALF
Real Estate Investments
Number of properties | property				2
Number of Units in Real Estate Property				74
Subsequent Event
Real Estate Investments
Proceeds from Sale and Collection of Lease Receivables			$ 300,000
Rent Receivable Abated	$ 215,000	$ 215,000	240,000
Rent abated	$ 215,000	$ 215,000	$ 240,000
Subsequent Event | Dividend Payable, July 29, 2022
Equity
Dividends declared and paid per common share | $ / shares			$ 0.19
Subsequent Event | Dividend Payable, August 31, 2022
Equity
Dividends declared and paid per common share | $ / shares		$ 0.19
Subsequent Event | Dividend Payable, September 30, 2022
Equity
Dividends declared and paid per common share | $ / shares	$ 0.19
Subsequent Event | Equity Distribution Agreements
Equity
Amount available under effective shelf registration statement						$ 160,349,000
Subsequent Event | Common Stock | Dividend Payable, July 29, 2022
Equity
Dividends declared and paid per common share | $ / shares			$ 0.19
Subsequent Event | Common Stock | Dividend Payable, August 31, 2022
Equity
Dividends declared and paid per common share | $ / shares		$ 0.19
Subsequent Event | Common Stock | Dividend Payable, September 30, 2022
Equity
Dividends declared and paid per common share | $ / shares	$ 0.19