CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net loss	$ (20,565)	$ (34,946)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	23,145	24,336
(Benefit) provision for bad debts	(81)	309
Stock-based compensation	1,600	1,440
Impairment of intangible assets	0	992
Amortization of deferred financing costs	1,163	1,409
Interest income on interest rate swap	(713)	(713)
Accretion of contingent consideration	0	1,772
Change in fair value of contingent consideration	0	357
Deferred income taxes	(5,668)	(8,203)
Loss on sales of property	126	31
Changes in operating assets and liabilities:
Accounts receivable	24,901	21,393
Inventories	(3,957)	(1,138)
Prepaid expenses and other current assets	(5,942)	(832)
Accounts payable	83	4,791
Accrued expenses and other liabilities	(4,545)	(3,739)
Income taxes payable	1,669	(457)
Other assets and liabilities	(2,061)	(675)
Net cash provided by operating activities	9,155	6,127
Cash flows from investing activities:
Cash paid for property and equipment	(905)	(3,269)
Other investments	0	(250)
Net cash used in investing activities	(905)	(3,519)
Cash flows from financing activities:
Proceeds from long-term debt	1,395	0
Repayment of long-term debt	(2,683)	(2,805)
Proceeds from issuance of stock under employee stock purchase plan	197	0
Net cash used in financing activities	(1,091)	(2,805)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	(1,357)	1,737
Net increase in cash and cash equivalents and restricted cash	5,802	1,540
Cash and cash equivalents and restricted cash, beginning of period	29,817	34,852
Cash and cash equivalents, end of period	35,619	36,392
Cash paid for:
Cash paid for interest	12,726	10,255
Cash paid for income taxes	2,345	2,230
Supplemental schedule of non-cash investing and financing activities:
Accrued purchases of property and equipment	$ 419	$ 52