Share Repurchases (Details Textual) - Class A Common Stock - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	May 17, 2017	Aug. 31, 2011
MayTwoThousandSeventeenAuthorization [Member]
Share Repurchases (Textual) [Abstract]
Stock Repurchase Program			$ 2.0
Treasury Stock, Shares, Acquired	0	0
Stock Repurchase Program Remaining Authorized Repurchases Amount	$ 0.7
August 2011 authorization [Member]
Share Repurchases (Textual) [Abstract]
Stock Repurchase Program				$ 20.0
Stock Repurchase Program Remaining Authorized Repurchases Amount			$ 0.1
Outside of Publically Announced Repurchase Program [Member]
Share Repurchases (Textual) [Abstract]
Treasury Stock, Shares, Acquired	64,743	90,557
Treasury stock acquired volume weighted-average price	$ 0.81	$ 2.09