Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities:
Net income (loss)	$ (151,270)	$ (376,384)	$ (534,194)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Share-based compensation	19,549	27,142	27,297
Depreciation and amortization	11,691	12,945	13,451
Amortization of intangible assets	94,057	94,057	94,056
Amortization of debt discount and issuance costs	3,196	2,896	2,222
Loss on extinguishment of debt	0	0	11,935
Operating lease impairment charges	2,687	25,345	1,062
Goodwill and intangible asset impairment charges	10,000	0	386,553
Non-cash restructuring charges	0	976	0
Non-cash lease expense	4,016	4,017	5,033
Other non-cash items, net	(902)	(250)	(5)
Other non-cash items, net
Accounts receivable	5,386	12,574	(2,758)
Commissions receivable	119,706	231,274	(452,950)
Prepaid expenses and other assets	7,512	2,140	(18,613)
Accounts payable	2,556	(24,795)	30,477
Accrued liabilities	32,920	546	25,745
Deferred revenue	1,809	50,058	(200)
Commissions payable	(53,154)	(3,423)	117,489
Operating lease liabilities	(8,731)	(6,597)	(4,885)
Other liabilities	8,113	8,383	(721)
Net cash provided by (used in) operating activities	109,141	60,904	(299,006)
Investing Activities
Purchases of property, equipment and capitalized software	(13,732)	(13,512)	(19,801)
Net cash (used in) provided by investing activities	(13,732)	(13,512)	(19,801)
Financing Activities
Repayment of borrowings	(15,336)	(160,270)	(298,970)
Proceeds from stock option exercises	91	5	0
Proceeds from sale of Series A redeemable convertible preferred stock	0	50,000	0
Issuance cost payments from issuance of Series A redeemable convertible preferred stock	0	(1,641)	0
Payment of preferred stock dividends	(3,566)	0	0
Debt issuance cost payments	0	(2,697)	(4,108)
Repurchase of shares to satisfy employee tax withholding obligations	(2,295)	(345)	0
Principal payments under capital lease obligations	0	(103)	(318)
Proceeds from borrowings	0	0	565,000
Call premium paid for debt extinguishment	0	0	(5,910)
Advancement to NVX Holdings, Inc.	0	0	3,395
Net cash (used in) provided by financing activities	(21,106)	(115,051)	259,089
Effect of exchange rate changes on cash and cash equivalents	42	(238)	(155)
Increase (decrease) in cash and cash equivalents	74,345	(67,897)	(59,873)
Cash and cash equivalents at beginning of period	16,464	84,361	144,234
Cash and cash equivalents at end of period	90,809	16,464	84,361
Supplemental Disclosure of Cash Flow Information
Interest paid	55,345	56,920	28,244
Income taxes paid	548	486	879
Non-cash investing and financing activities:
Purchases of property, equipment and software included in accounts payable	$ 2	$ 123	$ 633