Shareholders' Equity - Additional Information (Details) $ / shares in Units, $ in Thousands						3 Months Ended
	Jul. 16, 2020 USD ($) $ / shares	Jun. 10, 2020 trustee $ / shares shares	May 21, 2020 USD ($)	Feb. 27, 2020 trustee $ / shares shares	Feb. 20, 2020 USD ($) $ / shares	Jun. 30, 2020 $ / shares shares	Mar. 31, 2020 $ / shares shares	Jun. 30, 2019 shares
Class of Stock [Line Items]
Quarterly distribution paid (in dollars per share)					$ 0.54
Common stock dividend | $			$ 1,646		$ 88,863
Number of new trustees | trustee		7,000		2
Shares repurchased (in shares) | shares						3,808	2,637
Shares repurchased (in dollars per share)						$ 7.09	$ 16.36
Common Shares
Class of Stock [Line Items]
Shares repurchased (in shares) | shares							2,637	2,172
Trustee One | Common Shares
Class of Stock [Line Items]
Shares granted (in shares) | shares		5,000		3,000
Shares granted valued (in dollars per share)		$ 10.80		$ 18.64
Trustee Two | Common Shares
Class of Stock [Line Items]
Shares granted (in shares) | shares		5,000		3,000,000
Shares granted valued (in dollars per share)		$ 10.80		$ 18,640.00
Trustee Three | Common Shares
Class of Stock [Line Items]
Shares granted (in shares) | shares		5,000
Shares granted valued (in dollars per share)		$ 10.80
Trustee Four | Common Shares
Class of Stock [Line Items]
Shares granted (in shares) | shares		5,000
Shares granted valued (in dollars per share)		$ 10.80
Trustee Five | Common Shares
Class of Stock [Line Items]
Shares granted (in shares) | shares		5,000
Shares granted valued (in dollars per share)		$ 10.80
Trustee Six | Common Shares
Class of Stock [Line Items]
Shares granted (in shares) | shares		5,000
Shares granted valued (in dollars per share)		$ 10.80
Trustee Seven | Common Shares
Class of Stock [Line Items]
Shares granted (in shares) | shares		5,000
Shares granted valued (in dollars per share)		$ 10.80
Subsequent event
Class of Stock [Line Items]
Common stock dividend | $	$ 1,646
Quarterly distribution declared (in dollars per share)	$ 0.01