Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ 69,450,766	$ 56,342,010	$ (7,241,147)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and other amortization	522,368	529,814	526,997
(Gain) loss on change in fair value of warrant liability	(117,770)	3,525,846	(5,091,256)
Stock-based compensation	1,265,809	1,350,948	2,113,994
Write down of inventory, net	618,771	0	0
Deferred income taxes provision (benefit)	121,446	11,606,949	(2,417,617)
Loss on extinguishment of Term Loan	0	4,981,461	0
Non-cash interest expense	0	887,132	4,497,271
Changes in assets and liabilities:
Accounts receivable	(80,310,187)	827,733	(2,208,863)
Inventory	136,369	(8,009,992)	(6,744,644)
Prepaid expenses and other assets	48,963	699,102	(714,272)
Accounts payable, accrued expenses and other liabilities	986,865	(3,116,843)	936,839
Income tax payable	18,287,487	912,462	0
Deferred revenue	483,749	982,606	(1,861,605)
Net cash provided by (used in) operating activities	11,494,636	71,519,228	(18,204,303)
Cash flows from investing activities:
Capital expenditures	(50,620)	(15,501)	(29,094)
Cash used in investing activities	(50,620)	(15,501)	(29,094)
Cash flows from financing activities:
Payment of employee tax obligations for common stock tendered	(173,918)	(184,016)	(1,176,579)
Repurchase of common stock	(26,021,519)	(28,502,946)	0
Repayment of Term Loan	0	(85,913,459)	0
Cash used in financing activities	(26,195,437)	(114,600,421)	(1,176,579)
Net decrease in cash and cash equivalents	(14,751,421)	(43,096,694)	(19,409,976)
Cash, cash equivalents and restricted cash at the beginning of period	117,890,240	160,986,934	180,396,910
Cash, cash equivalents and restricted cash at end of period	103,138,819	117,890,240	160,986,934
Supplemental disclosure of cash flows information:
Non-cash lease right-of-use asset and associated liability (net of deferred rent in 2019)	733,715	0	2,944,932
Conversion of warrant to common stock	0	3,003,517	1,172,801
Issuance of common stock upon cashless exercise	0	97,250	118,500
Cash income taxes paid (refund), net	$ 1,063,744	$ 3,718,581	$ (1,276,129)