CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Mar. 31, 2011
CURRENT ASSETS
Cash and cash equivalents	$ 6,065	$ 3,710
Accounts receivable, net	162,093	171,779
Inventories	54,129	50,888
Prepaid expenses	14,976	13,447
Deferred income taxes	16,552	10,787
Total current assets	253,815	250,611
PROPERTY AND EQUIPMENT, net	377,055	388,681
GOODWILL	24,847	27,124
OTHER INTANGIBLE ASSETS, net	15,623	19,376
OTHER ASSETS	10,569	12,691
TOTAL ASSETS	681,909	698,483
CURRENT LIABILITIES
Current portion of long-term debt	23,596	15,911
Accounts payable	90,392	90,100
Accrued liabilities	68,496	81,501
Total current liabilities	182,484	187,512
LONG-TERM DEBT, net of current portion	140,150	154,161
OTHER LIABILITIES	31,523	13,820
DEFERRED INCOME TAXES, net	54,051	45,629
Total liabilities	408,208	401,122
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' EQUITY
Common stock, $.01 par value; 100,000,000 shares authorized; 10,239,819 and 11,072,053 issued and outstanding	102	110
Additional paid-in capital	161,914	170,547
Retained earnings	109,832	123,990
Accumulated other comprehensive income	1,853	2,714
Total shareholders' equity	273,701	297,361
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 681,909	$ 698,483