Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities
Net income (loss)	$ (3,550,538)	$ 803,025
Adjustments to reconcile net income (loss) to cash used in operating activities:
Depreciation	56,032	281,656
Amortization of intangibles		32,994
Amortization of deferred finance costs		24,657
Non-cash lease expense	1,171,171
Share-based compensation	473,093	320,356
Loss on asset disposal		1,449
Adjustment of warrants		(2,590,361)
Changes in operating assets and liabilities:
Accounts receivable	23,963	(506,141)
Inventories	(368,450)	(398,422)
Prepaid expenses and other current assets	449,292	(44,475)
Other assets	30,212	(36,897)
Accounts payable	(84,311)	(300,886)
Accrued liabilities	215,436	(236,374)
Deferred revenue	814,073	1,119,224
Operating lease liability	(1,145,340)
Other liabilities	(380,514)	(956)
Net cash used in operating activities	(2,295,881)	(1,531,151)
Cash flows from investing activities
Purchase of fixed assets	(9,833)	(56,864)
Net cash used in investing activities	(9,833)	(56,864)
Cash flows from financing activities
Proceeds from issuance of stock, net of issuance costs	(18,444)	28,747
Proceeds from warrant exercise		9,864,697
Net cash provided by (used in) financing activities	(18,444)	9,893,444
Net increase (decrease) in cash and cash equivalents	(2,324,158)	8,305,429
Cash and cash equivalents at beginning of period	10,796,072	3,686,302
Cash and cash equivalents at end of period	$ 8,471,914	$ 11,991,731