CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net loss	$ (34,946)	$ (31,278)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	24,336	22,953
Provision for bad debts	309	182
Stock-based compensation	1,440	1,900
Pension expense	0	64
Impairment of intangible assets	992	0
Amortization of deferred financing costs	1,409	1,214
Interest income on interest rate swap	(713)	0
Accretion of contingent consideration	1,772	2,043
Change in fair value of contingent consideration	357	236
Deferred income taxes	(8,203)	(506)
Loss on sales of property	31	0
Other	0	114
Changes in operating assets and liabilities:
Accounts receivable	21,393	27,340
Inventories	(1,138)	(5,083)
Prepaid expenses and other current assets	(832)	(8,152)
Accounts payable	4,791	(7,300)
Accrued expenses and other liabilities	(3,739)	(8,434)
Income taxes payable	(457)	(1,216)
Other assets and liabilities	(675)	2,098
Net cash provided by (used in) operating activities	6,127	(3,825)
Cash flows from investing activities:
Cash paid for property and equipment	(3,269)	(2,327)
Asset Acquisition	0	(1,587)
Other investments	(250)	0
Net cash used in investing activities	(3,519)	(3,914)
Cash flows from financing activities:
Payment of Dow liabilities settlement	0	(10,000)
Repayment of long-term debt	(2,805)	(3,330)
Net cash used in financing activities	(2,805)	(13,330)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	1,737	(1,688)
Net increase (decrease) in cash and cash equivalents and restricted cash	1,540	(22,757)
Cash and cash equivalents and restricted cash, beginning of period	34,852	64,533
Cash and cash equivalents and restricted cash, end of period	36,392	41,776
Cash paid for:
Cash paid for interest	10,255	15,777
Cash paid for income taxes	2,230	4,245
Supplemental schedule of non-cash investing and financing activities:
Accrued purchases of property and equipment	52	0
Right of use assets obtained in exchange for new lease liabilities	296	0
Reconciliation of cash and cash equivalents and restricted cash:
Total cash and cash equivalents and restricted cash	$ 34,852	$ 64,533