CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash	$ 1,776	$ 2,015
Short term investment (certificate of deposit)	1,040	1,035
Accounts receivable, net of allowance of $10 and $10, respectively	6,981	4,388
Contract assets	827	1,931
Prepaid expenses and other current assets	148	621
Total current assets	10,772	9,990
Property, plant and equipment, net	9,328	9,691
Intangibles, net	55	56
Right-of-use operating lease assets	5,403	0
Other assets	354	383
Total assets	25,912	20,120
Current liabilities:
Accounts payable and accrued liabilities	2,155	1,982
Contract liabilities	1,037	973
Current lease liabilities	1,236	0
Current portion of long-term debt	9	9
Total current liabilities	4,437	2,964
Non-current lease liabilities	4,176	0
Long-term debt (Auto loan)	44	47
Total long term liabilities	4,220	47
Total liabilities	8,657	3,011
Commitments and contingencies (Note 9)
Stockholders' equity:
Common stock, $0.001 par value, 24,500,000 shares authorized, 15,706,010 and 15,706,010 shares issued, respectively	16	16
Additional paid-in capital	73,375	73,271
Treasury stock, 2,255,330 and 2,027,217 shares, respectively, at cost	(2,232)	(2,062)
Accumulated deficit	(53,904)	(54,116)
Total stockholders' equity	17,255	17,109
Total liabilities and stockholders' equity	$ 25,912	$ 20,120