CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net loss	$ (6,082)	$ (52,966)	$ (54,153)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	45,745	46,970	83,456
Stock based compensation for equity classified awards	3,067	3,440	2,934
Amortization of deferred financing cost	2,285	2,875	2,600
Provision for bad debts	215	(237)	63
Interest income on interest rate swap	0	(2,258)	0
Accretion of contingent consideration	0	0	3,459
Change in fair value of contingent consideration	0	0	(330)
Deferred income taxes	(1,527)	29,251	(28,988)
Impairment of assets	0	0	11,424
Goodwill impairment	6,380	0	0
Gain on sales of property	56	162	4
Changes in operating assets and liabilities:
Accounts receivable	3,529	4,989	(321)
Inventories	3,286	(1,745)	(388)
Prepaid expenses and other current assets	(5,252)	(6,173)	2,087
Accounts payable	(1,368)	4,168	6,499
Accrued expenses and other liabilities	2,887	878	(9,239)
Income taxes payable	(1,549)	(1,242)	1,615
Other assets and liabilities	330	(1,397)	(663)
Net cash provided by operating activities	52,002	26,715	20,059
Cash flows from investing activities:
Cash paid for property and equipment	(4,023)	(2,395)	(4,176)
Other investments	0	0	(250)
Net cash used in investing activities	(4,023)	(2,395)	(4,426)
Cash flows from financing activities:
Net proceeds from issuance of convertible preferred stock	0	145,490	0
Payment of issuance costs for convertible preferred stock	0	(7,006)	0
Payment of dividends	(13,933)	(5,244)	0
Proceeds from long term debt	0	2,042	0
Payment of deferred financing costs	0	(8,034)	0
Payment for redemption of convertible preferred stock	(5,330)	0	0
Repayment of long term debt	(12,390)	(132,423)	(6,285)
Borrowings under revolving credit facility	0	0	4,000
Repayments of revolving credit facility	0	0	(4,000)
Settlement payment under Tax Receivables Agreement	0	0	(16,003)
Proceeds from issuance of stock under employee stock purchase plan	268	316	241
Net cash used in financing activities	(31,385)	(4,859)	(22,047)
Effect of exchange rate changes on cash and cash equivalents	(4,694)	752	1,379
Net increase (decrease) in cash and cash equivalents	11,900	20,213	(5,035)
Cash and cash equivalents, beginning of period	50,030	29,817	34,852
Cash and cash equivalents, end of period	61,930	50,030	29,817
Cash paid for:
Interest	19,729	23,792	30,144
Income taxes	5,967	2,722	2,642
Supplemental schedule of non-cash investing and financing activities:
Accrued purchases of property and equipment	103	141	71
Settlement of Dow liabilities not resulting from a cash payment	0	0	22,012
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents	61,930	50,030	29,288
Restricted cash within other current assets	0	0	529
Total cash and cash equivalents and restricted cash	$ 61,930	$ 50,030	$ 29,817