Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (50,542)	$ (49,847)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	9,269	5,503
Write off of property and equipment, net	185
Stock-based compensation	14,814	17,909
(Gain) on puttable option liabilities		(1)
Change in fair value of contingent consideration	(3,265)
(Gain) on contingent shares issuance liabilities	(11,325)	(4,237)
Bad debt expense (reversal of allowance for doubtful accounts)	(9)	85
Paid-in kind interest on long-term debt	203	2,577
Amortization of debt issuance costs and issuance discount	4,100	2,668
Income tax benefit	(269)
Change in assets and liabilities, net of acquisitions
Accounts receivable, net of allowance	(3,972)	1,739
Prepaid expense and other current assets	(787)	(395)
Inventory	59
Deposits and other non-current assets	(427)	(238)
Accounts payable	(715)	(1,062)
Accrued expenses and other liabilities	2,654	2,513
Deferred revenues	(48)	210
Net cash used in operating activities	(40,075)	(22,576)
Cash flows from investing activities:
Capitalization of software development costs	(3,280)	(4,309)
Purchase of property and equipment	(1,031)	(2,221)
Acquisition of business, net of cash	(89,767)
Net cash used in investing activities	(94,078)	(6,530)
Cash flows from financing activities:
Principal payments under capital lease obligations	(12)	(75)
Proceeds from long-term debt, net of discount	95,430	5,960
Proceeds from Related-party – Unsecured subordinated promissory note, net of unamortized discount	11,474
Repayment of long-term debt	(10,795)	(88,345)
Repayment of Related-party – Unsecured subordinated promissory note	(13,703)
Issuance of contingently redeemable preferred stock, net of offering costs		10,938
Exercise of stock options and warrants	85	98
Proceeds from Employee Stock Purchase Plan used for common stock purchases	235
Stock repurchases from employees for tax withholdings		(11,883)
Liquidation of preferred stock (Series H, I and J)		(63,176)
Proceeds from merger and recapitalization, net of transaction costs		209,802
Proceeds from issuance of Class A Common Stock, net of issuance costs	51,545
Net cash provided by financing activities	134,259	63,319
NET INCREASE IN CASH AND CASH EQUIVALENTS	106	34,213
Cash and cash equivalents at beginning of year	38,754	4,541
Cash and cash equivalents at end of year	38,860	38,754
Supplemental disclosure of cash flow information:
Cash paid during the year for taxes	58	31
Cash paid during the year for interest	4,182	7,109
Supplemental schedule of non-cash investing and financing transactions:
Purchase of property and equipment reflected in accounts payable and accrued expenses at year end	64	513
Assets acquired under capital lease arrangements	80	26
Accretion of contingently redeemable preferred stock		96,974
Redemption of Series H preferred stock through issuance of common stock		106,642
Exercise of stock options		26,597
Exercise of warrants		$ 11,765