Consolidated Statements of Comprehensive Loss Statement - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income attributable to Carver Bancorp, Inc.	$ 178	$ 173
Other Comprehensive (Loss) Income, Net of Tax [Abstract]
Change in unrealized loss of securities available-for sale	(868)	1,562
Reclassification adjustment for sales of available-for-sale securities, net of tax	0	4
Other Comprehensive Income (Loss), Net of Tax	(868)	1,558
Total comprehensive income (loss), net of tax attributable to Carver Bancorp, Inc.	$ (690)	$ 1,731