Variable Interest Entities Text Tag (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2023
Variable Interest Entity [Line Items]
% of Carver Statutory Trust I owned	100.00%
Carver Statutory Trust 1
Variable Interest Entity [Line Items]
Variable Interest Entity, Funded Exposure, Debt Investment	$ 13,000
Variable Interest Entity, Funded Exposure, Equity Invesment	$ 400
Variable Interest Entity, Total Exposure		$ 13,400