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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

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Note 1 - Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019	Dec. 31, 2016
Allowance for Doubtful Accounts Receivable, Ending Balance	$ 8,000	$ 8,000		$ 4,000
Share-based Compensation, Total	241,000	68,000
Interest-bearing Deposits in Banks and Other Financial Institutions	0	0
Unrestricted Cash and Cash Equivalents	5,900,000
Surety Bonds Amount Outstanding	7,300,000	7,300,000
Loss Contingency, Loss in Period	10,000	20,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	0
Goodwill, Impairment Loss	0	0
Goodwill, Written off Related to Sale of Business Unit	1,100,000
Goodwill, Ending Balance	780,000	1,907,000
Impairment of Intangible Assets, Finite-lived	$ 0	$ 0
Subsequent Event [Member]
Operating Lease, Right-of-Use Asset			$ 2,000,000
Operating Lease, Liability, Total			$ 2,000,000
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| US-based IT OEM Company [Member]
Concentration Risk, Percentage	75.00%	26.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| US-based UPS Manufacturer [Member]
Concentration Risk, Percentage		22.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| US-based Technology Company [Member]
Concentration Risk, Percentage		23.00%
Selling, General and Administrative Expenses [Member]
Share-based Compensation, Total	$ 200,000	$ 100,000
Maintenance Contracts [Member]
Revenue, Remaining Performance Obligation, Amount	$ 2,181,000
Revenue, Remaining Performance Obligation, Expectation to be Recognized, Period	1 year
All Other Services [Member]
Revenue, Remaining Performance Obligation, Amount	$ 112,000
Maximum [Member]
Allowance for Doubtful Accounts Receivable, Ending Balance	$ 8,000	$ 8,000
Maximum [Member] \| All Other Services [Member]
Revenue, Remaining Performance Obligation, Expectation to be Recognized, Period	3 years
Minimum [Member] \| All Other Services [Member]
Revenue, Remaining Performance Obligation, Expectation to be Recognized, Period	1 year