CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ (637)	$ 212
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Share-based compensation	50	104
Depreciation and amortization	302	345
Gain on sale of property, plant and equipment	0	15
Non-cash lease expense	5	9
Changes in operating assets and liabilities:
Accounts receivable, net	(181)	(2,566)
Contract assets	270	1,104
Prepaid expenses and other current assets	32	(34)
Other assets	(94)	21
Accounts payable and accrued liabilities	67	173
Contract liabilities	277	64
Net cash provided by (used in) operating activities	91	(583)
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	0	15
Purchases of property, plant and equipment	(61)	0
Payments received on note receivable (included in Prepaid expenses and other current assets)	4	507
Short term investment - (certificate of deposit)	0	(5)
Net cash provided by (used in) investing activities	(57)	517
Cash flows from financing activities:
Principal payment on long-term debt	0	(3)
Repurchase of common shares	(524)	(170)
Net cash used in financing activities	(524)	(173)
Change in cash	(490)	(239)
Cash, beginning of period	3,523	2,015
Cash, end of period	3,033	1,776
Supplemental schedule of non-cash investing and financing activities:
Property, plant and equipment sold in accounts receivable	$ 0	$ 27