CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Cash flows from operating activities:
Net loss	$ (9,302)	$ (9,157)	$ (11,280)	$ (12,867)	$ (26,731)	$ (42,984)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	200		600		794	1,933
Amortization of right-of-use assets under operating leases	400		400		1,190	1,351
Amortization of intangible assets	1,270		1,352		3,810	3,912
PIK accrual					6,505	4,777
Share-based compensation expense	900		1,200		3,916	3,918
Bad debt expense	226		(203)		776	319
Amortization of debt discount					2,791	2,846
Amortization of debt issuance costs					1,797	1,846
Deferred income taxes					76	(224)
Loss on disposal of fixed assets					14	121
Change in fair value of warrant liability	0		(2,225)		0	(1,145)
Changes in operating assets and liabilities:
Accounts receivable					(3,335)	(311)
Prepaid expenses and other current assets					3,092	12,350
Other assets					179	(1,891)
Accounts payable and accrued expenses					2,412	(2,475)
Current and non-current operating lease liabilities					(1,233)	(1,351)
Other current and non-current liabilities					323	(587)
Net cash used in operating activities					(3,624)	(17,595)
Cash flows from financing activities:
Proceeds from revolving loan agreement					250	0
Proceeds from issuance of common stock, net of issuance costs					0	20,461
Proceeds from issuance of treasury stock, net of issuance costs					0	18,374
Exercise of Warrants, net of costs					(90)	0
Debt issuance and amendment costs					0	(4,886)
Repayments of long-term debt					0	(30,000)
Distributions to non-controlling interests					(51)	(269)
Payments of tax withholding on issuance of restricted share units and restricted shares					(675)	(511)
Net cash (used in) provided by financing activities					(566)	3,169
Net decrease in cash, cash equivalents and restricted cash					(4,190)	(14,426)
Cash, cash equivalents and restricted cash at the beginning of the period		$ 35,416		$ 54,273	35,416	54,273	$ 54,273
Cash, cash equivalents and restricted cash at the end of the period	31,226		39,847		31,226	39,847	35,416
Supplemental cash flow information:
Interest paid					18,092	16,989
Income taxes paid (refunded), net					1,393	(4,034)
Acquisition of right-of-use assets with operating lease liabilities					442	329
Reduction of right-of-use assets from operating lease modifications or reassessments					(87)	(671)
Non-cash investing and financing activities:
Warrants issued in connection with Amended Credit Agreement					0	8,096
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	28,339		36,640		28,339	36,640	32,522
Restricted cash	2,887		3,207		2,887	3,207	2,894
Total cash, cash equivalents and restricted cash reported in the statements of cash flows	$ 31,226		$ 39,847		$ 31,226	$ 39,847	$ 35,416