6. EQUIPMENT NOTES PAYABLE (Details) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($)
Debt Disclosure [Abstract]
2016	$ 208
2017	201
2018	156
2019	0
2020	0
Thereafter	0
Total equipment note	$ 565
Interest rates on notes	Interest rates between 3.5% and 4.5%
Maturity description	On or before October 2018

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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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