CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating activities:
Net loss	$ (2,241)	$ (28,962)	$ (58,485)
Adjustments to reconcile net loss to net cash provided/(used) by operating activities:
Depreciation and amortization	20,404	22,459	20,560
Amortization of debt issuance cost	1,961	2,155	2,278
Goodwill and intangible asset impairment	0	26,439	77,750
Contingent consideration write-off	0	0	(7,950)
Stock-based compensation	1,717	2,018	1,615
Debt issuance cost write-off	0	8,466	0
Payments to settle interest rate derivatives	0	(793)	0
Deferred taxes	78	76	(6,060)
Other non-cash items	(1,005)	686	(420)
Changes in operating assets and liabilities, net of acquired businesses:
Trade accounts receivable	9,624	14,270	(4,678)
Inventories	(1,047)	(1,101)	(23,063)
Prepaid expenses and other assets	325	109	550
Current income taxes	6,506	(5,908)	1,939
Accounts payable	(8,427)	307	(10,760)
Accrued expenses	4,467	8,896	(1,625)
Net cash provided/(used) by operating activities	32,362	49,117	(8,349)
Investing activities:
Additions to property, plant and equipment	(16,599)	(16,690)	(23,738)
Acquisitions, net of cash acquired	0	0	(504)
Proceeds from sale of equipment	285	3,579	1,989
Net cash used by investing activities	(16,314)	(13,111)	(22,253)
Financing activities:
Proceeds from issuance of debt	0	250,000	5,751
Principal payments on long-term debt and notes payable	(13,276)	(235,633)	(5,863)
Advances on revolving line of credit	99,000	66,000	107,000
Payments on revolving line of credit	(99,000)	(102,000)	(77,236)
Debt issuance costs	(195)	(8,018)	(1,817)
Other, net	0	0	(8)
Net cash (used)/provided by financing activities	(13,471)	(29,651)	27,827
Net increase/(decrease) in cash and cash equivalents	2,577	6,355	(2,775)
Cash and cash equivalents, beginning of year	7,927	1,572	4,347
Cash and cash equivalents, end of year	10,504	7,927	1,572
Cash payments for:
Interest paid	21,336	7,388	13,161
Income tax refunds received, net	(6,370)	(3,037)	(2,683)
Supplemental disclosure of non-cash transactions:
Contingent consideration	0	0	(7,950)
Equipment acquired under capital lease	$ 0	$ 0	$ 411