CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net loss	$ (2,774)	$ (4,742)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	1,381	1,872
Share-based compensation	250	56
Non-cash lease expense	27	0
Bad debt expense	20	67
Gain on disposal of assets	(7)	(439)
Loss on asset impairment	396	1,890
Changes in operating assets and liabilities:
Accounts receivable	(86)	(503)
Contract assets	1,117	(1,006)
Prepaid expenses and other current assets	(52)	218
Other assets	93	210
Accounts payable and accrued liabilities	222	471
Contract Liabilities	(350)	361
Net cash provided by (used in) operating activities	237	(1,545)
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	88	538
Payments received on employee receivable (included in other assets)	517	16
Purchases of property, plant and equipment	(91)	(882)
Cash provided by (used in) short term investment	1,035	(18)
Net cash provided by (used in) investing activities	1,549	(346)
Cash flows from financing activities:
Principal payment on long-term debt	(56)	(11)
Cash paid for purchase of our common stock	(222)	(22)
Net cash used in financing activities	(278)	(33)
Change in cash	1,508	(1,924)
Cash, beginning of year	2,015	3,939
Cash, end of year	3,523	2,015
Supplemental schedule of non-cash investing and financing activities:
Shares of common stock surrendered to settle employee payroll tax liabilities	0	30
Reclassification of a note receivable	0	537
Property, plant, and equipment acquired with debt	0	67
Property, plant, and equipment acquired in exchange for accounts receivable	0	250
Accounts receivable for sale of property, plant and equipment	$ 0	$ 40