Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Net (loss) earnings	$ (65,349)	$ 140,255	$ 150,750
Other comprehensive income (loss):
Unrealized gains (losses) on available for sale securities, net of tax of $0, $115 and ($200), respectively	143	213	(372)
Amortization of loss on derivative contract, net of tax of $0, $251 and $251, respectively	717	466	466
Change in supplemental executive retirement plan pension liability, net of tax of $0, $409 and $1,306 respectively	(1,845)	760	2,427
Change in pension plan minimum liability, net of tax of $0, $763 and ($290), respectively	(5,739)	1,417	(539)
Change in other benefit plan minimum liability, net of tax of $(769), $1,109 and $111, respectively	(1,429)	2,060	207
Total comprehensive (loss) income	$ (73,502)	$ 145,171	$ 152,939