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Note 2 - Allowance for Doubtful Accounts | 12 Months Ended
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Dec. 31, 2021
Notes to Financial Statements |
Allowance for Credit Losses [Text Block] | Note 2 – Allowance for Doubtful Accounts The allowance for doubtful accounts was $0.2 million at December 31, 2021 and $0.4 million at December 31, 2020.

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- Definition The entire disclosure for allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -URI http://asc.fasb.org/topic&trid=2196771 + Details
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