CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
Jun. 28, 2019	Jun. 29, 2018
Cash flows from operating activities:
Net income (loss)	$ (440)	$ 438
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	132	135
Bad debt expense	457	0
Provision for excess and obsolete inventory	0	159
Noncash lease expense	254	262
Other	7	125
Changes in operating assets (increases in parenthesis) and liabilities (decreases in parenthesis):
Accounts receivable	383	(1,758)
Lease receivable	129	120
Inventories	517	(1,367)
Operating lease right-of-use asset	(44)	0
Contract revenue in excess of billings	(221)	(1,140)
Prepaid expenses and other assets	224	(60)
Accounts payable	(611)	233
Accrued liabilities	234	406
Accrued pension and retirement liabilities	(85)	(122)
Billings in excess of contract revenue	(2,246)	2,964
Operating lease liability	(246)	(258)
Net cash provided by (used in) operating activities	(1,556)	137
Cash flows from investing activities:
Purchases of property and equipment	(68)	(59)
Proceeds from sale of property and equipment	0	3
Net cash used in investing activities	(68)	(56)
Cash flows from financing activities:
Proceeds for shares issued on exercise of options	21	0
Principal payments on long-term debt	(117)	(110)
Net cash used in financing activities	(96)	(110)
Net decrease in cash, cash equivalents, and restricted cash	(1,720)	(29)
Cash, cash equivalents, and restricted cash as of beginning of the period	8,585	5,588
Cash, cash equivalents, and restricted cash as of end of the period	6,865	5,559
Supplemental disclosures of non-cash investing and financing activities
New operating lease	2,698	0
Supplemental disclosures of cash flow information
Cash paid during the period for: Interest	44	50
Cash paid during the period for: Income taxes	$ 9	$ 48

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