CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comp. Income (Loss)	Total
Balance at Mar. 31, 2013	$ 5,320	$ 41,458	$ 157,471	$ (4)	$ 204,245
Balance (in shares) at Mar. 31, 2013	7,980,202
Increase (decrease) in stockholders' equity
Net (loss) income			15,117		15,117
Repurchase of common stock	$ (134)	(12,172)			(12,306)
Repurchase of common stock (in shares)	(201,192)
Exercise of stock options	$ 56	3,469			3,525
Exercise of stock options (in shares)	84,853
Vesting of restricted stock units	$ 5	(5)
Vesting of restricted stock units (in shares)	7,307
Issuances of restricted stock, net of forfeitures	$ 8	(8)
Issuances of restricted stock, net of forfeitures (in shares)	12,845
Tax benefit (expense) on share based compensation		9			9
Stock-based compensation		2,485	16		2,501
Dividends declared			(15,713)		(15,713)
Net change in unrealized gains (losses) on investment securities, available-for-sale, net of tax				17	17
Balance at Mar. 31, 2014	$ 5,255	35,236	156,891	13	197,395
Balance (in shares) at Mar. 31, 2014	7,884,015
Increase (decrease) in stockholders' equity
Net (loss) income			979		979
Repurchase of common stock	$ (495)	(35,977)			(36,472)
Repurchase of common stock (in shares)	(743,099)
Exercise of stock options	$ 18	1,056			1,074
Exercise of stock options (in shares)	26,224
Vesting of restricted stock units	$ 11	(11)
Vesting of restricted stock units (in shares)	16,875
Issuances of restricted stock, net of forfeitures	$ 6	(6)
Issuances of restricted stock, net of forfeitures (in shares)	9,232
Tax benefit (expense) on share based compensation		291			291
Stock-based compensation		2,745	26		2,771
Dividends declared			(15,607)		(15,607)
Net change in unrealized gains (losses) on investment securities, available-for-sale, net of tax				(24)	(24)
Balance at Mar. 31, 2015	$ 4,795	3,334	142,289	(11)	$ 150,407
Balance (in shares) at Mar. 31, 2015	7,193,247				7,193,247
Increase (decrease) in stockholders' equity
Net (loss) income			(3,249)		$ (3,249)
Repurchase of common stock	$ (60)	(3,071)			(3,131)
Repurchase of common stock (in shares)	(88,056)
Vesting of restricted stock units	$ 9	(9)
Vesting of restricted stock units (in shares)	12,797
Issuances of restricted stock, net of forfeitures	$ 13	(13)
Issuances of restricted stock, net of forfeitures (in shares)	19,093
Tax benefit (expense) on share based compensation		(69)			(69)
Stock-based compensation		1,600	7		1,607
Dividends declared			(14,453)		(14,453)
Net change in unrealized gains (losses) on investment securities, available-for-sale, net of tax				$ 11	11
Balance at Mar. 31, 2016	$ 4,757	$ 1,772	$ 124,594		$ 131,123
Balance (in shares) at Mar. 31, 2016	7,137,081				7,137,081