Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 9,517	$ 25,716
Accounts receivable, (net of allowance for doubtful accounts of $5,002 in 2014 and $5,553 in 2013)	83,069	87,952
Inventories	83,550	83,930
Prepaid expenses	8,472	8,179
Other current assets	15,714	15,695
Total current assets	200,322	221,472
Property and equipment, net	303,617	309,664
Goodwill	61,927	68,975
Intangible assets	11,707	14,470
Non-current deferred tax asset	10,662	5,045
Other assets	5,809	4,438
Total assets	594,044	624,064
Current liabilities:
Notes payable	244	8,267
Accounts payable	41,827	42,220
Accrued expenses	56,109	61,368
Current maturities of long-term debt	4,406	2,166
Total current liabilities	102,586	114,021
Long-term debt, net of current maturities	460,840	432,706
Liabilities under capital lease	3,945	0
Non-current deferred tax liability	10,416	16,350
Pension, other post-retirement and post-employment obligations	80,471	66,866
Other long-term liabilities	9,896	5,570
Commitments and contingencies (Note 9)
Stockholders’ deficit:
Preferred stock, $0.001 par value, 1,000,000 shares authorized; no shares outstanding as of December 31, 2014 and 2013	0	0
Common stock, $0.001 par value, 20,000,000 shares authorized; 15,560,627 and 15,383,903 shares outstanding as of December 31, 2014 and 2013, respectively	16	15
Stock warrants	0	13,532
Paid-in capital	428,880	414,742
Accumulated deficit	(417,068)	(409,686)
Accumulated other comprehensive loss	(85,938)	(30,052)
Total stockholders’ deficit	(74,110)	(11,449)
Total liabilities and stockholders’ deficit	$ 594,044	$ 624,064