Stock-Based Compensation Plans (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Stock-Based Compensation Plans
Unrecognized compensation cost	$ 1.4
Weighted average life over which unrecognized compensation is expected to be recognized	1 year 8 months 23 days
General and administrative expenses
Stock-Based Compensation Plans
Stock-based compensation expense	$ 0.8	$ 0.7
Restricted stock awards
Number of Shares
Unvested at the beginning of the period (in shares)	328,382
Vested (in shares)	(66,475)
Unvested at the end of the period (in shares)	261,907
Weighted-Average Grant-Date Fair Value
Unvested at the beginning of the period (in dollars per share)	$ 11.79
Vested (in dollars per share)	8.21
Unvested at the end of the period (in dollars per share)	$ 12.70