Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income	$ 4,879	$ 17,584
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	47,177	25,702
Amortization of debt issuance costs	3,048	1,827
Interest rate swap:
Total derivative losses (gains), net	3,130
Write-off of unamortized debt issuance costs	2,589
Joint venture net income in excess of cash received	(463)	(2,503)
Compensation expense from issuance of restricted stock and incentive stock options	3,560	2,919
Non-cash restructuring and impairment charges	1,891
Changes in operating assets and liabilities:
Accounts receivable	(24,422)	(11,361)
Inventories	1,663	(3,940)
Accounts payable	629	(8,380)
Other assets and liabilities	2,451	(8,593)
Net cash provided by operating activities	46,132	13,255
Cash flows from investing activities:
Acquisition of property, plant and equipment	(32,166)	(26,318)
Proceeds from measurement period adjustments to previous acquisition	1,635
Proceeds from disposals of property, plant and equipment	366	441
Cash paid to acquire businesses, net of cash received		(9,017)
Capital contributions to joint venture		869
Net cash used by investing activities	(30,165)	(34,025)
Cash flows from financing activities:
Debt issue costs paid	(3,692)	(136)
Dividends Paid	(5,677)	(4,554)
Proceeds from long-term debt	39,000	8,517
Repayment of long-term debt	(39,562)	(149,530)
Repayments of short-term debt, net	(4,101)	(1,458)
Proceeds from shares issued		173,052
Proceeds from issuance of stock and exercise of stock options	2,553	1,831
Principal payments on capital lease	(3,465)	(3,990)
Net cash provided by (used in) financing activities	(14,944)	23,732
Effect of exchange rate changes on cash flows	(1,322)	(177)
Net change in cash and cash equivalents	(299)	2,785
Cash and cash equivalents at beginning of year	15,087	37,317
Cash and cash equivalents at end of year	$ 14,788	$ 40,102