CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (1,731,771)	$ (3,541,064)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	330,147	387,543
Stock-based compensation	594,728	676,664
Provision for uncollectible accounts	(59,558)	19,000
Provision for sales returns	(295,000)	(581,000)
Provision for inventory reserves	55,000	615,000
Loss on abandonment of property and equipment	115,548	0
Gain on sale of long-term assets	0	(125)
Changes in operating assets and liabilities:
Accounts receivable	1,978,664	1,609,967
Inventory	6,190,637	3,794,495
Prepaid expenses and other assets, net	(171,358)	(266,933)
Accounts payable	(260,448)	(77,039)
Accrued cooperative advertising	(58,000)	(184,000)
Accrued income taxes	6,743	6,336
Other accrued liabilities	(175,285)	713,860
Net cash provided by operating activities of continuing operations	6,520,047	3,172,704
Net cash used in operating activities of discontinued operations	(935,326)	(1,897,817)
Net cash provided by operating activities	5,584,721	1,274,887
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(118,433)	(145,733)
Patent, license rights, and trademark costs	(255)	(45,742)
Proceeds from sale of long-term assets	0	175
Net cash used in investing activities of continuing operations	(118,688)	(191,300)
Net cash provided by (used in) investing activities of discontinued operations	368,671	(9,452)
Net cash provided by (used in) investing activities	249,983	(200,752)
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	5,837,004	1,246,901
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	5,274,305	4,007,341
CASH AND CASH EQUIVALENTS, END OF PERIOD	11,111,309	5,254,242
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	1,512	784
Cash paid during the period for income taxes	$ 0	$ 0