UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - 9 months ended Dec. 31, 2015 - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Total
Balance at Mar. 31, 2015	$ 131	$ 111,072	$ (118,179)	$ 286,477	$ (239)	$ 279,262
Balance (in shares) at Mar. 31, 2015	7,389					7,389
Excess tax benefit of share based compensation	$ 0	1,159	0	0	0	$ 1,159
Issuance of restricted stock awards	$ 1	0	0	0	0	1
Issuance of restricted stock awards (in shares)	123
Share-based compensation	$ 0	4,210	0	0	0	4,210
Repurchase of common stock	$ 0	0	(2,475)	0	0	(2,475)
Repurchase of common stock (in shares)	(30)
Net earnings	$ 0	0	0	34,790	0	34,790
Foreign currency translation adjustment	0	0	0	0	(273)	(273)
Balance at Dec. 31, 2015	$ 132	$ 116,441	$ (120,654)	$ 321,267	$ (512)	$ 316,674
Balance (in shares) at Dec. 31, 2015	7,482					7,482