Share Repurchases (Details Textual) - Class A Common Stock - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	May 17, 2017	Mar. 31, 2017	Aug. 31, 2011
MayTwoThousandSeventeenAuthorization [Member]
Share Repurchases (Textual) [Abstract]
Stock Repurchase Program			$ 2.0
Treasury Stock, Shares, Acquired	113,484
Stock Repurchase Program Remaining Authorized Repurchases Amount	$ 1.8
Treasury stock acquired volume weighted-average price	$ 2.99
August 2011 authorization [Member]
Share Repurchases (Textual) [Abstract]
Stock Repurchase Program					$ 20.0
Treasury Stock, Shares, Acquired		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	39,269	41,544
Treasury stock acquired volume weighted-average price	$ 2.91	$ 3.40