CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
OPERATING ACTIVITIES
Net income (loss)	$ 3,600	$ (448)
Adjustments to reconcile net income (loss) to net cash provided by operating activities-
Depreciation	15,488	17,705
Amortization	812	895
Bad debt expense	230	316
Other charges	1,133	1,669
Foreign currency loss (gain)		55
Deferred income taxes	(2,604)	(938)
Share-based compensation expense	742	707
Changes in assets and liabilities, net of effects of acquisitions-
Accounts receivable, net	8,240	8,490
Inventories	(7,472)	(2,527)
Prepaid expenses	2,389	(70)
Other assets	1,302	1,963
Accounts payable and accrued liabilities	(6,321)	(6,314)
Other liabilities	(386)	552
Income taxes payable	(8)	(18)
Net cash provided by operating activities	17,145	22,037
INVESTING ACTIVITIES
Acquisitions of businesses, net of cash acquired	(37)	(34)
Capital expenditures	(5,608)	(15,278)
Proceeds from asset dispositions	2,890	205
Net cash used in investing activities	(2,755)	(15,107)
FINANCING ACTIVITIES
Proceeds from bank credit facilities	21,807	25,757
Payments on bank credit facilities	(32,279)	(17,836)
Payments on term equipment notes and other debt	(7,214)	(4,682)
Payments to repurchase and retire common stock		(7,926)
Net cash used in financing activities	(17,686)	(4,687)
Effect of exchange rate changes on cash and cash equivalents	76	(170)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(3,220)	2,073
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	12,217	6,065
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 8,997	$ 8,138