CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Cash Flows From Operating Activities:
Net Loss	$ (7,983,738)	$ (8,678,347)
Adjustments To Reconcile Net Loss To Net Cash Used In Operating Activities:
Depreciation and Amortization	209,367	187,527
Stock-based Compensation	934,846	1,517,302
Increase in Inventory Reserves	0	11,000
Amortization of Right of Use Asset	390,517	478,442
Amortization of Debt Financing Costs and Accretion of Debt Discount	15,262	0
Realized (Gain) on Sale of Investments Available-for-Sale	(1,929)	(13,888)
Foreign Currency Translation Adjustment	5,611	(92)
Changes in Assets and Liabilities:
(Increase) Decrease in Accounts Receivable, net	(384,024)	268,104
Decrease in Insurance Receivable	0	371,217
(Increase) Decrease in Inventory	(827,861)	162,208
Decrease in Prepaid and Other Assets	1,092,529	203,982
Increase in Accounts Payable	104,757	30,154
Decrease in Settlement Payable	(47,000)	(249,999)
Decrease in Lease Liability	(338,668)	(467,440)
Increase in Other Liabilities	737,937	1,319,375
Decrease in Deferred License Revenue	(446,036)	(563,217)
Changes in Assets and Liabilities	(108,366)	1,074,384
Cash Used In Operating Activities	(6,538,430)	(5,423,672)
Cash Flows From Investing Activities:
Purchase of Investments Available-for-Sale	(8,871,583)	(8,812,954)
Sale of Investments Available-for-Sale	11,660,692	12,761,519
Purchase of Equipment	(202,753)	(121,826)
Purchase of Research and Development Licenses (Related Party)	0	(250,000)
Cash Provided By Investing Activities	2,586,356	3,576,739
Cash Flows From Financing Activities:
Proceeds from Term Loan	22,500,000	0
Debt Issuance Costs	(374,043)	0
Payments on Short Term Note Payable	(572,566)	0
Proceeds from the Issuance of Common Stock / Public Offering	8,147,871	0	$ 5,383,079
Offering Costs from the Issuance of Common Stock / Public Offering	(143,913)	0	(309,479)
Proceeds from the Exercise of Employee Stock Options	0	147,900
Repurchase of Common Shares to Pay Employee Withholding Taxes	0	(95,429)
Cash Provided By Financing Activities	29,557,349	52,471
Increase (Decrease) In Cash and Cash Equivalents	25,605,275	(1,794,462)
Cash At Beginning Of Period	11,794,526	22,713,980	22,713,980
Cash At End Of Period	37,399,801	20,919,518	$ 11,794,526
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Interest	80,908	0
Supplemental Disclosure of Noncash Investing and Financing Activities:
Change in Unrealized Loss on Marketable Securities Available-for-Sale	(6,710)	(7,161)
Delivery of Common Stock Underlying Restricted Stock Units	0	273,830
Issuance Costs related to Debt Financing, not yet paid	956,782	0
Fair Value of Warrants issued related to Debt Financing	$ 500,736	$ 0