Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Net income	$ 803,025	$ 999,669
Adjustments to reconcile net income to cash used in operating activities:
Depreciation	281,656	277,402
Amortization of intangibles	32,994	99,661
Amortization of deferred finance costs	24,657	49,588
Share-based compensation	320,356	412,678
Loss on asset disposal	1,449	20,772
Adjustment of warrants	(2,590,361)	(3,429,563)
Changes in operating assets and liabilities:
Accounts receivable	(506,141)	(210,757)
Inventories	(398,422)	396,988
Prepaid expenses and other current assets	(44,475)	288,295
Other assets	(36,897)	(1,806)
Accounts payable	(300,886)	(885,763)
Accrued liabilities	(236,374)	(603,653)
Deferred revenue	1,119,224	(794,922)
Other liabilities	(956)	907
Net cash used in operating activities	(1,531,151)	(3,380,504)
Cash flows from investing activities
Purchase of fixed assets	(56,864)	(4,297)
Net cash used in investing activities	(56,864)	(4,297)
Cash flows from financing activities
Payments of deferred financing costs		(100,000)
Proceeds from issuance of stock, net of issuance costs	28,747	18,872
Proceeds from warrant exercise	9,864,697
Net cash provided by (used in) financing activities	9,893,444	(81,128)
Net increase (decrease) in cash and cash equivalents	8,305,429	(3,465,929)
Cash and cash equivalents at beginning of period	3,686,302	8,501,392
Cash and cash equivalents at end of period	$ 11,991,731	$ 5,035,463