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Note 6 - Revenues - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Balance | $ 578 | $ 585
Unbilled | 640 | 585
Billings | (458) | (469)
Balance | 760 | 701
Balance | 3,400 |
Billings | 458 | 469
Balance | 4,900 |
Deferred Membership Dues [Member] |  |
Billings | (3,294) | (2,533)
Balance | 3,363 | 3,196
Billings | 3,294 | 2,533
Revenue recognized | (1,714) | (1,607)
Balance | 4,943 | 4,122
Customer Advance Deposits [Member] |  |
Billings | (388) | (232)
Balance | 795 | 674
Billings | 388 | 232
Revenue recognized | (263) | (154)
Balance | $ 920 | $ 752

X
- Definition The amount of membership dues received, but not yet billed, during the period. + References No definition available. + Details
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Balance Type: | debit
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X
- Definition The amount of billings of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References No definition available. + Details
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X
- Definition The amount of revenue recognized excluding the opening balance of contract with customer liability. + References No definition available. + Details
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Balance Type: | credit
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X
- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130533-203044 + Details
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X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130532-203044 + Details
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X
- Details
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |