Stock-based Compensation - Summary of the Status of the Trust's Non-Vested Restricted Common Shares (Details) - 2013 Plan - Restricted common shares	3 Months Ended
	Mar. 31, 2022 $ / shares shares
Common Shares
Non-vested at the beginning of the period (in shares) | shares	247,447
Granted (in shares) | shares	210,380
Vested (in shares) | shares	(187,262)
Forfeited (in shares) | shares	(3,868)
Non-vested at the end of the period (in shares) | shares	266,697
Weighted Average Grant Date Fair Value
Non-vested at beginning of period (in dollars per share) | $ / shares	$ 17.41
Granted (in dollars per share) | $ / shares	16.37
Vested (in dollars per share) | $ / shares	17.21
Forfeited (in dollars per share) | $ / shares	17.98
Non-vested at end of period (in dollars per share) | $ / shares	$ 16.72