CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 7,149	$ 4,751
Trade accounts receivable, net of allowances of $2,687 and $2,368 as of June 30, 2013 and December 31, 2012, respectively	101,784	84,034
Inventories	25,368	25,001
Deferred income taxes	2,933	2,835
Prepaid expenses	4,784	3,651
Other receivables	11,296	4,414
Other current assets	2,016	3,080
Total current assets	155,330	127,766
Property, plant and equipment, net of accumulated depreciation, depletion, and amortization of $46,436 and $38,273 as of June 30, 2013 and December 31, 2012, respectively	121,318	120,871
Goodwill	10,526	10,717
Purchased intangible assets, net	13,813	15,033
Other assets	4,113	5,337
Total assets	305,100	279,724
Current liabilities:
Current maturities of long-term debt	1,898	1,861
Accounts payable	57,396	48,880
Accrued liabilities	39,415	36,430
Derivative liabilities	15,738	22,030
Total current liabilities	114,447	109,201
Long-term debt, net of current maturities	88,898	61,598
Other long-term obligations and deferred credits	11,964	13,114
Deferred income taxes	3,386	3,287
Total liabilities	218,695	187,200
Commitments and contingencies (Note 17)
Equity:
Preferred stock	0	0
Common stock	14	13
Additional paid-in capital	140,155	136,451
Accumulated deficit	(50,885)	(43,196)
Treasury stock, at cost	(2,879)	(744)
Total stockholders’ equity	86,405	92,524
Total liabilities and equity	$ 305,100	$ 279,724