Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ 1,166,252	$ (3,232,400)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	55,444	61,579
Stock-based compensation	341,026	66,496
Change in fair value of warrant liability	0	(77,601)
Changes in operating assets and liabilities:
Accounts receivable	814,108	(211,240)
Inventories	283,909	55,379
Prepaid expenses and other current and long-term assets	343,177	236,859
Accounts payable	(369,665)	(329,980)
Accrued expenses and compensation	(868)	121,822
Increase (Decrease) in Accrued Product Returns	(553,439)	(161,856)
Deferred revenue	0	116,968
Net cash provided by (used in) operating activities	2,079,944	(3,353,974)
Cash flows from investing activities:
Purchases of fixed assets	(25,833)	0
Net cash used in investing activities	(25,833)	0
Cash flows from financing activities:
Net proceeds from issuance of stock and warrants	0	6,302,000
Net cash provided by financing activities	0	6,302,000
Net increase in cash and cash equivalents	2,054,111	2,948,026
Cash and cash equivalents, beginning of period	4,043,681	3,949,135
Cash and cash equivalents, end of period	$ 6,097,792	$ 6,897,161