2. SIGNIFICANT ACCOUNTING POLICIES (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2016

Dec. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Inventory Valuation

	September 30,			December 31,
	2016			2015
Raw materials	$	862		$	686
Work in process		271			186
Finished goods		159			365
Inventory reserve		(121	)		(118	)
Total	$	1,171		$	1,119

	Year Ended December 31,
	2015			2014
Raw materials	$	686		$	884
Work in process		186			304
Finished goods		365			136
Inventory reserve		(118	)		(144	)
Total	$	1,119		$	1,180

Property and Equipment

	September 30,			December 31,
	2016			2015
Equipment	$	1,378		$	1,377
Software		740			740
Furniture and fixtures		124			124
Leasehold improvement		199			199
Total		2,441			2,440
Less: accumulated depreciation		(2,270	)		(2,122	)
Total	$	171		$	318

	Year Ended December 31,
	2015			2014
Equipment	$	1,377		$	1,391
Software		740			737
Furniture and fixtures		124			124
Leasehold Improvement		199			180
		2,440			2,432
Less accumulated depreciation		(2,122	)		(1,845	)
Total	$	318		$	587

Accrued Liabilities

	September 30, 2016		December 31, 2015
Accrued compensation	$	1,521	$	1,235
Accrued professional fees		79		154
Deferred rent		19		36
Accrued warranty		63		82
Accrued vacation		183		177
Accrued interest		65		—
Accrued dividends		266		167
Other accrued expenses		112		56
Total	$	2,308	$	1,907

	As of December 31,
	2015		2014
Accrued compensation	$	1,235	$	447
Accrued professional fees		154		203
Deferred rent		36		54
Accrued warranty		82		119
Accrued vacation		177		144
Other accrued expenses		223		48
Total	$	1,907	$	1,015

Prepaid Expenses and Deposits

	September 30, 2016		December 31, 2015
Prepaid expenses	$	12	$	26
Prepaid insurance		133		108
Prepaid investor relations		—		275
Deposits - equipment		316		368
Deposits - other		2		3
Total	$	463	$	780