CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Activities:
Net income (loss)	$ 10,426,015	$ (644,503)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	13,541	13,748
Amortization of right-of-use asset	62,968	59,621
Stock-based compensation	1,519,351	933,411
Change in accrued interest and accretion of discount on investments	81,296	(53,674)
(Increase) decrease in:
Accounts receivable, net	3,618,434	(7,251,381)
Inventory	(254,546)	(40,575)
Prepaid expenses and other current assets and deposits	(1,711,641)	(231,485)
Increase (decrease) in:
Accounts payable	(2,769,870)	602,719
Accrued expenses and other liabilities	(3,699,518)	(1,337,155)
Operating lease liability	(72,952)	(67,155)
Net cash provided by (used in) operating activities	7,213,078	(8,016,429)
Investing Activities:
Purchases of property and equipment		(5,633)
Purchases of investments		(9,944,974)
Proceeds from maturities and sales of investments	5,000,000	20,400,000
Net cash provided by (used in) investing activities	5,000,000	10,449,393
Financing Activities:
Proceeds from exercise of stock options	26,149	89,350
Net cash provided by (used in) financing activities	26,149	89,350
Net increase (decrease) in cash and cash equivalents	12,239,227	2,522,314
Cash and cash equivalents—beginning of period	89,511,710	16,559,400
Cash and cash equivalents—end of period	101,750,937	19,081,714
Non-cash investing and financing activities:
Unrealized gain (loss) on available-for-sale securities	$ 74,246	$ 13,560