INCOME TAXES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Current [Abstract]
Federal	$ 0	$ 0
State	(12,821)	(7,749)
Total	(12,821)	(7,749)
Deferred [Abstract]
Federal	0	(3,691,163)
State	0	(353,051)
Total	0	(4,044,214)
Income tax net expense	(12,821)	(4,051,963)
Deferred income tax assets [Abstract]
Reserves and accruals	1,578,374	1,472,997
Prepaid expenses	(50,966)	(48,427)
Federal NOL carryforwards	6,762,537	4,185,179
State NOL carryforwards	583,651	616,655
Hong Kong NOL carryforwards	995,566	995,566
Federal benefit on state taxes under uncertain tax positions	132,385	128,026
Stock-based compensation	481,917	189,045
Investment loss	0	9,373
Research tax credit	434,637	434,637
Alternative minimum tax credit	348,264	348,264
Contributions carryforward	33,582	3,929
Depreciation	(312,023)	(418,154)
Accrued rent	254,404	297,362
Loss on impairment of long-lived assets	52,226	53,533
Valuation allowance	(11,294,554)	(8,267,985)
Total	0	0
Total deferred income tax assets, net	$ 0	0
Federal statutory income tax rate	34.00%
Effective income tax rate reconciliation [Abstract]
Anticipated income tax benefit at statutory rate	$ 3,315,420	3,075,321
State income tax benefit, net of federal tax effect	35,814	215,109
Capital loss carryforward expiration	(9,227)	0
Income tax effect of uncertain tax positions	(8,461)	(8,080)
Return to provision adjustments	(82,341)	(2,751)
Stock-based compensation	(215,030)	(279,985)
Other changes in deferred income tax assets, net	(22,414)	25,493
Increase in valuation allowance	(3,026,582)	(7,077,070)
Income tax net expense	(12,821)	(4,051,963)
Federal income tax credits	882,000
Remaining balance of federal income tax expire between 2018 and 2021	533,000
Operating Loss Carryforwards [Line Items]
Valuation allowance	11,294,554	8,267,985
Gross liability for income taxes, uncertain tax positions	519,000
Direct reduction to associated deferred tax asset	98,000
Interest and penalties associated with uncertain tax positions	13,000	12,000
Accrued Income tax expense for estimated tax, penalties, and interest for other uncertain tax positions	$ 152,000	139,000
Period for settlement of uncertain tax positions	12 months
Activities related to gross liability for uncertain tax positions [Roll Forward]
Beginning balance	$ 506,463	494,222
Increases related to prior year tax positions	12,821	12,241
Ending balance	519,284	506,463
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 19,890,000
Federal [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2020
Federal [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2035
North Carolina [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 18,050,000
North Carolina [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2023
North Carolina [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2030
Other State [Member] | Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2016
Other State [Member] | Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2035
Hong Kong Tax Code [Member]
Deferred income tax assets [Abstract]
Valuation allowance	$ (996,000)	(996,000)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	6,030,000
Valuation allowance	$ 996,000	$ 996,000