CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net loss	$ (12,876)	$ (12,029)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	11,273	10,978
Provision for bad debts	52	180
Stock-based compensation	609	216
Pension expense	347	49
Unrealized gain on derivative instrument	0	0
Amortization of deferred financing costs	601	579
Accretion of contingent consideration	0	3,704
Increase in fair value of contingent consideration	138	215
Deferred income taxes	3,630	232
Loss on sales of property	0	81
Other	0	43
Changes in operating assets and liabilities:
Accounts receivable	5,818	9,148
Inventories	3,497	(637)
Prepaid expenses and other current assets	(430)	407
Accounts payable	(7,853)	(5,013)
Accrued expenses and other liabilities	(9,426)	(716)
Income taxes payable	1,758	(9)
Other assets and liabilities	6,279	1,408
Net cash provided by operating activities	3,417	8,836
Cash flows from investing activities:
Cash paid for property and equipment	(1,905)	(1,014)
Other investments	0	(350)
Net cash used in investing activities	(1,905)	(1,364)
Cash flows from financing activities:
Payment of Dow liabilities settlement	(10,000)	0
Repayment of long term debt	(1,407)	(1,063)
Net cash used in financing activities	(11,407)	(1,063)
Effect of exchange rate changes on cash and cash equivalents	2,324	1,137
Net (decrease) increase in cash and cash equivalents	(7,571)	7,546
Cash and cash equivalents, beginning of period	64,533	77,312
Cash and cash equivalents, end of period	56,962	84,858
Supplemental disclosures of cash flow information:
Cash paid for interest	7,242	6,085
Cash paid for income taxes	156	679
Supplemental schedule of non-cash investing and financing activities:
Accrued purchases of property and equipment	$ 0	$ 578