CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013
CURRENT ASSETS
Cash and cash equivalents	$ 16,043	$ 12,217
Accounts receivable, net	169,161	164,647
Inventories	62,992	55,389
Prepaid expenses	13,000	15,877
Deferred income taxes	11,737	10,215
Total current assets	272,933	258,345
PROPERTY AND EQUIPMENT, net	322,280	343,832
GOODWILL	23,776	23,870
OTHER INTANGIBLE ASSETS, net	10,254	11,936
OTHER ASSETS	5,048	6,660
TOTAL ASSETS	634,291	644,643
CURRENT LIABILITIES
Current portion of long-term debt	14,459	20,550
Accounts payable	86,857	83,578
Accrued liabilities	70,457	71,974
Income taxes payable	2,158
Total current liabilities	173,931	176,102
LONG-TERM DEBT, net of current portion	83,085	103,134
OTHER LIABILITIES	41,655	44,255
DEFERRED INCOME TAXES, net	39,208	42,778
Total liabilities	337,879	366,269
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' EQUITY
Common stock, $.01 par value; 100,000,000 shares authorized; 9,687,642 and 9,633,475 issued and outstanding	97	96
Additional paid-in capital	157,777	154,657
Retained earnings	138,369	124,139
Accumulated other comprehensive income (loss)	169	(518)
Total shareholders' equity	296,412	278,374
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 634,291	$ 644,643