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Note 1 - Organization and Significant Accounting Policies - Summary of Remaining Performance Obligations 2 (Details) $ in Thousands | Dec. 31, 2021 USD ($)
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Rental Revenue [Member] |
Revenue, expected to be recognized in the future | $ 14,799
Service Revenue [Member] |
Revenue, expected to be recognized in the future | 108
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Rental Revenue [Member] |
Revenue, expected to be recognized in the future | $ 10,151
Revenue, expected to be recognized in the future, period (Year) | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 | Service Revenue [Member] |
Revenue, expected to be recognized in the future | $ 67
Revenue, expected to be recognized in the future, period (Year) | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Rental Revenue [Member] |
Revenue, expected to be recognized in the future | $ 3,748
Revenue, expected to be recognized in the future, period (Year) | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01 | Service Revenue [Member] |
Revenue, expected to be recognized in the future | $ 31
Revenue, expected to be recognized in the future, period (Year) | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Rental Revenue [Member] |
Revenue, expected to be recognized in the future | $ 900
Revenue, expected to be recognized in the future, period (Year) | 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Service Revenue [Member] |
Revenue, expected to be recognized in the future | $ 10
Revenue, expected to be recognized in the future, period (Year) | 1 year

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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045 + Details
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- Definition Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045 + Details
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