CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (4,525,761)	$ (9,573,059)
Net loss from discontinued operations	(573,726)	(4,485,787)
Net loss from continuing operations	(3,952,035)	(5,087,272)
Adjustments to reconcile net loss to net cash provided by operating activities of continuing operations:
Depreciation and amortization	557,393	758,787
Stock-based compensation	959,134	1,545,144
Provision for uncollectible accounts	(73,300)	89,462
Provision for sales returns	(316,000)	(179,000)
Provision for inventory reserves	200,000	436,000
Loss on abandonment of property and equipment	117,930	0
Gain on sale of long-term assets	0	(125)
Changes in operating assets and liabilities:
Accounts receivable	1,447,325	1,747,140
Inventory	3,998,003	6,174,209
Prepaid expenses and other assets, net	162,157	(103,012)
Accounts payable	654,001	251,517
Accrued cooperative advertising	(8,000)	(162,000)
Accrued income taxes	13,480	12,821
Accrued expenses and other liabilities	(425,387)	338,702
Net cash provided by operating activities of continuing operations	3,334,701	5,822,373
Net cash used in operating activities of discontinued operations	(1,125,578)	(4,254,480)
Net cash provided by operating activities	2,209,123	1,567,893
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(421,761)	(407,452)
Patent, license rights, and trademark costs	(5,615)	(45,742)
Proceeds from sale of long-term assets	250	175
Net cash used in investing activities of continuing operations	(427,126)	(453,019)
Net cash provided by (used in) investing activities of discontinued operations	368,671	(20,676)
Net cash used in investing activities	(58,455)	(473,695)
CASH FLOWS FROM FINANCING ACTIVITIES:
Stock option exercises	2,300	172,766
Net cash provided by financing activities of continuing operations	2,300	172,766
NET INCREASE IN CASH AND CASH EQUIVALENTS	2,152,968	1,266,964
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	5,274,305	4,007,341
CASH AND CASH EQUIVALENTS, END OF PERIOD	7,427,273	5,274,305
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	$ 1,737	$ 10,359