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Note 3 - Acquisitions (Details Textual) $ in Millions |  |  |  |  |  | 2 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) | Dec. 21, 2021 USD ($) | Dec. 21, 2021 CAD ($) | Oct. 28, 2021 USD ($) | Oct. 21, 2021 | Oct. 06, 2021 USD ($) shares | Dec. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Sep. 30, 2021 USD ($) | [2] | Jun. 30, 2021 USD ($) | [3] | Mar. 31, 2021 USD ($) | [4] | Dec. 31, 2020 USD ($) | [5] | Sep. 30, 2020 USD ($) | [6] | Jun. 30, 2020 USD ($) | [7] | Mar. 31, 2020 USD ($) | [8] | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 21, 2021 CAD ($)
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  |  | $ 22,358,000 | [1] | $ 21,144,000 | $ 21,820,000 | $ 19,556,000 | $ 14,875,000 | $ 14,443,000 | $ 13,275,000 | $ 11,230,000 | $ 84,878,000 | $ 53,823,000 |
Net Income (Loss) Attributable to Parent, Total |  |  |  |  |  |  |  |  | 287,000 | [1] | $ 2,175,000 | $ 2,609,000 | $ 2,212,000 | $ (380,000) | $ 458,000 | $ 170,000 | $ (1,143,000) | 7,283,000 | $ (895,000) |
Z-Sciences [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Total |  |  |  |  |  | $ 479,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  |  |  | 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Total | $ 179,000 |  |  |  |  | 179,000 | $ 179,000 | $ 179,000 | 179,000 |  |  |  |  |  |  |  |  | 179,000 |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  | $ 82,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) |  |  |  |  |  | 14 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  |  | 15,000 |  |  |  |  |  |  |  |  |  |  |  |
Z-Sciences [Member] | Restricted Stock Award [Member] | Achieving Future Performance Milestones [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Vesting Percentage |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Z-Sciences [Member] | Maximum [Member] | Restricted Stock Award [Member] | Achieving Future Performance Milestones [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  |  |  |  |  | $ 1,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares |  |  |  |  |  | 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Videology [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Total |  |  |  | $ 12,094 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  | 12,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  | $ 288,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) |  |  |  | 11 years 7 months 6 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  |  |  | 1,434,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss) Attributable to Parent, Total |  |  |  |  |  |  | (146,000) |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Transaction Costs |  |  |  | $ 288,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acculogic [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Total |  | $ 9,297,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  | 9,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Total | 930,000 | 930,000 |  |  |  |  | 930,000 | 930,000 | 930,000 |  |  |  |  |  |  |  |  | 930,000 |  |
Business Combination, Acquisition Related Costs |  | 1,297,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) |  |  |  |  | 14 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax | 48,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss) Attributable to Parent, Total | (131,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Transaction Costs |  | $ 1,297,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acculogic [Member] | Payments Based on Performance Metrics [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Total | $ 4,000,000 |  |  |  |  |  | $ 4,000,000 | $ 4,000,000 | $ 4,000,000 |  |  |  |  |  |  |  |  | $ 4,000,000 |  | $ 5.0
Minimum Amount Required for Invoices Received |  |  | $ 2.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | The quarter ended December 31, 2021 includes a recovery of $17 of restructuring and other charges which are discussed in Note 5.
[2] | The quarter ended September 30, 2021 includes $51 of restructuring and other charges which are discussed in Note 5.
[3] | The quarter ended June 30, 2021 includes $197 of restructuring and other charges which are discussed in Note 5.
[4] | The quarter ended March 31, 2021 includes $55 of restructuring and other charges which are discussed in Note 5.
[5] | The quarter ended December 31, 2020 includes $1,078 of restructuring and other charges which are discussed in Note 5.
[6] | The quarter ended September 30, 2020 includes $161 of restructuring and other charges which are discussed in Note 5.
[7] | The quarter ended June 30, 2020 includes $38 of restructuring and other charges which are discussed in Note 5.
[8] | The quarter ended March 31, 2020 includes $8 of restructuring and other charges which are discussed in Note 5.

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