Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Redemption Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended				6 Months Ended
	Jan. 01, 2020	Dec. 31, 2019	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Redemption plans
Redemption of shares, value			$ 1,248	$ 1,237	$ 427	$ 826
Redemption Plans
Redemption plans
Amount of securities redemption			$ 40,000				$ 40,000
Redemption price of securities	$ 18.25	$ 18.00
Redemption of shares							95,000	20,000
Redemption of shares, value							$ 1,735	$ 351
Additional redemption of units							41,000	50,000
Additional redemption of units, value							$ 750	$ 902