CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 4,663	$ 4,751
Trade accounts receivable, net of allowances of $2,521 and $2,368 as of March 31, 2013 and December 31, 2012, respectively	84,333	84,034
Inventories	24,989	25,001
Deferred income taxes	2,694	2,835
Prepaid expenses	4,827	3,651
Other receivables	7,503	4,414
Other current assets	2,173	3,080
Total current assets	131,182	127,766
Property, plant and equipment, net of accumulated depreciation, depletion, and amortization of $42,260 and $38,273 as of March 31, 2013 and December 31, 2012, respectively	119,082	120,871
Goodwill	10,521	10,717
Purchased intangible assets, net	14,183	15,033
Other assets	4,290	5,337
Total assets	279,258	279,724
Current liabilities:
Current maturities of long-term debt	1,879	1,861
Accounts payable	41,873	48,880
Accrued liabilities	35,324	36,430
Derivative liabilities	13,835	22,030
Total current liabilities	92,911	109,201
Long-term debt, net of current maturities	93,691	61,598
Other long-term obligations and deferred credits	11,872	13,114
Deferred income taxes	3,146	3,287
Total liabilities	201,620	187,200
Commitments and contingencies (Note 17)
Equity:
Preferred stock	0	0
Common stock	13	13
Additional paid-in capital	137,209	136,451
Accumulated deficit	(57,560)	(43,196)
Treasury stock, at cost	(2,024)	(744)
Total stockholders’ equity	77,638	92,524
Total liabilities and equity	$ 279,258	$ 279,724