CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 2,118	$ 12,044
Accounts receivable	2,203	4,208
Prepaid expenses and other current assets	1,315	1,611
Total current assets	5,636	17,863
Property and equipment, net	4	7
Intangible assets	67,000	71,600
Goodwill	4,629	11,100
Operating lease right-of-use assets	471	537
Other assets	752
Total assets	78,492	101,107
Current liabilities:
Accounts payable	3,409	5,200
Accrued expenses	7,198	9,911
Acquisition obligation, net	6,300	6,078
Operating lease liability	223	234
Other current liability	733
Total current liabilities	17,863	21,423
Warrant liability		2,819
Series X preferred stock liability (includes 5 shares of Series X convertible preferred stock, $0.01 par value per share issued and outstanding as December 31, 2022 - Note 6)	34,800	34,300
Operating lease liability, net of current portion	271	326
Deferred tax liability	3,010	3,283
Other liabilities		22
Total liabilities	55,944	62,173
Commitments and contingencies
Stockholders' equity:
Preferred stock
Common stock, $0.001 par value, Authorized - 140,000,000 shares; Issued and outstanding - 8,346,949 and 3,653,685 shares at March 31, 2023 and December 31, 2022, respectively	8	4
Additional paid-in capital	803,251	770,663
Accumulated deficit	(780,688)	(758,821)
Accumulated other comprehensive income (loss)	(23)	(21)
Total stockholders' equity	22,548	11,826
Total liabilities, convertible redeemable preferred stock, and stockholders' equity	78,492	101,107
Series A convertible preferred stock
Stockholders' equity:
Preferred stock
Series Z convertible preferred stock
Current liabilities:
Preferred stock, $0.01 par value, Authorized - 5,000,000 shares: Series Z convertible redeemable preferred stock (Note 8); Designated - 150,000 shares, Issued and outstanding - 0 and 77,900 shares at March 31, 2023 and December 31, 2022, respectively		27,108
Series B1 convertible preferred stock
Stockholders' equity:
Preferred stock		$ 1