CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities
Net (loss) income	$ (55,943)	$ (15,717)	$ 38,802
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	14,075	11,780	10,174
Amortization of debt discount and debt issuance costs	461	448	651
Provision for allowances	3,243	5,974	4,705
Deferred income tax expense (benefit)	31,159	(3,410)	(33,812)
Non-cash lease expense	4,989	0	0
Loss (gain) on derivatives	0	0	(1,581)
Impairment charges	16,306	22,423	14,356
Loss on early extinguishment of debt	1,978	79	4,969
Equity compensation	3,396	3,575	4,080
Other non-cash costs	52	3,231	68
Changes in operating assets and liabilities:
Accounts receivable	(6,642)	2,820	9,708
Prepaid expenses and other assets	(1,574)	(2,514)	1,816
Accounts payable and accrued expenses	(1,308)	(7,095)	(9,275)
Operating lease liabilities	(5,820)	0	0
Other	1,170	(597)	847
Net cash provided by operating activities	5,542	20,997	45,508
Cash flows from investing activities
Acquisitions, net of cash acquired	0	(1,930)	(85,977)
Acquisition-related settlements	0	(151)	(292)
Purchases of property and equipment	(2,940)	(4,597)	(5,111)
Net cash used in investing activities	(2,940)	(6,678)	(91,380)
Cash flows from financing activities
Proceeds from Term Loan	0	0	62,000
Principal payments on Term Loan	(83,876)	(16,124)	(1,500)
Convertible Note cash payment	0	0	(5,000)
Borrowings under revolving credit facility	5,000	0	39,000
Repayments on revolving credit facility	(5,000)	0	(39,000)
Debt issuance costs	(2,058)	(308)	(901)
Extinguishment fees	0	0	(578)
Proceeds from Senior Secured Asset-Based revolving credit facility	76,640	0	0
Borrowings under Senior Secured Asset-Based revolving credit facility	71,934	0	0
Repayments on Senior Secured Asset-Based revolving credit facility	(77,600)	0	0
Cash payments to noncontrolling shareholder	(1,573)	(1,194)	(1,217)
Stock repurchase and retirement	0	(5,000)	0
Other	(1,066)	(1,141)	(2,048)
Net cash (used in) provided by financing activities	(17,599)	(23,767)	50,756
Effect of exchange rate changes on cash	10	(70)	23
Change in cash and cash equivalents	(14,987)	(9,518)	4,907
Cash and cash equivalents at beginning of year	16,019	25,537	20,630
Cash and cash equivalents at end of year	1,032	16,019	25,537
Supplemental disclosure of cash flow information:
Interest paid	4,554	6,340	3,408
Income taxes paid	$ 555	$ 1,043	$ 697