Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Cash flows provided by operating activities
Net income	$ 3,355	$ 3,196
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	2,126	1,835
Share-based compensation	1,538	1,140
Bad debt expense	147	0
Loss on sale of property and equipment	576	0
Loss from discontinued operations, net of tax	1,436	0
Deferred taxes	(313)	0
Tax benefit from release of valuation allowance	0	(1,889)
Change in assets and liabilities
Accounts receivable	(2,131)	(2,238)
Contract assets	(1,589)	(1,106)
Inventory	(1,419)	(73)
Other current assets	(1,982)	(74)
Other long term assets	0	(339)
Accounts payable and accrued expenses	(1,481)	(114)
Contract liabilities	(166)	747
Net cash provided by operating activities	97	1,085
Cash flows provided by/(used in) investing activities
Acquisition of property and equipment	(422)	(501)
Intangible property costs	(291)	(192)
Proceeds from sale of property and equipment	403	0
Proceeds from sale of discontinued operations	600	0
Acquisition of General Photonics Corporation	0	(19,004)
Net cash provided by/(used in) investing activities	290	(19,697)
Cash flows provided by/(used in) financing activities
Payments on finance lease obligations	(39)	(27)
Payments of debt obligations	0	(625)
Repurchase of common stock	(329)	(2,220)
Proceeds from the exercise of options and warrants	1,397	438
Net cash provided by/(used in) financing activities	1,029	(2,434)
Net increase/(decrease) in cash and cash equivalents	1,416	(21,046)
Cash and cash equivalents—beginning of period	25,006	42,460
Cash and cash equivalents—end of period	26,422	21,414
Supplemental disclosure of cash flow information
Cash paid for interest	3	17
Cash paid for income taxes	2,000	735
Non-cash investing and financing activities
Contingent liability for business combination	0	940
Dividend on preferred stock, 59,469 shares of common stock issuable for the nine months ended September 30, 2019	$ 0	$ 285

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