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Note 17 - Special Purpose Acquisition Company (Details Textual) - USD ($) |  |  | 1 Months Ended | 4 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 14, 2021 | Nov. 16, 2020 | Oct. 31, 2020 | Nov. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Aug. 01, 2021 | Dec. 31, 2020
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  |  | $ 9.95 |  |  | $ 9.95
Payments to Acquire Investments, Total |  |  |  |  | $ 1,242,087,233 | $ 448,185,708 |  |
Business Combination Agreement with SHG [Member] |  |  |  |  |  |  |  |
Business Acquisition, Implied Pro Forma Equity Market Value of the Combined Company at Closing |  |  |  |  |  |  | $ 777,000,000 |
Payments to Acquire Businesses, Gross | $ 55,000,000 |  |  |  |  |  |  |
Business Acquisition, Additional Funding Expected to Be Raised By the Parties Involved Through a Private Placement Investment | 100,000,000 |  |  |  |  |  |  |
Business Acquisition, Backstop Agreed to Be Provided to Acquiree, Maximum Value | $ 45,000,000 |  |  |  |  |  |  |
Business Acquisition, Backstop Agreed to Be Provided to Acquiree, Price Per Share (in dollars per share) | $ 10 |  |  |  |  |  |  |
Business Acquisition, Minimum Investment Condition in Cash and Securities at Closing | $ 150,000,000 |  |  |  |  |  |  |
Business Acquisition, Gross Proceeds Expected to Be Received By the Combined Company | $ 238,000,000 |  |  |  |  |  |  |
Business Acquisition, Percentage of Equity in the Combined Company to Be Retained By the Acquiree's Equityholders | 100.00% |  |  |  |  |  |  |
Yellowstone Acquisition Company [Member] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 20.00% |  |  |  |
Common Class A [Member] | Business Combination Agreement with SHG [Member] |  |  |  |  |  |  |  |
Business Acquisition, Additional Financing in Support of Transaction, Number of Shares into which the Additional Equity Investment Will Be Converted (in shares) | 5,500,000 |  |  |  |  |  |  |
Business Acquisition, Additional Financing in Support of Transaction, Shares into which the Additional Equity Investment Will Be Converted, Price Per Share (in dollars per share) | $ 10 |  |  |  |  |  |  |
Yellowstone Acquisition Company [Member] |  |  |  |  |  |  |  |
Proceeds from Issuance Initial Public Offering |  |  | $ 125,000,000 |  |  |  |  |
Yellowstone Acquisition Company [Member] | Warrants Issued in Connection with Units [Member] |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  | $ 11.50 |  |  |  |  |
Yellowstone Acquisition Company [Member] | IPO [Member] |  |  |  |  |  |  |  |
Units Issued During Period, Number (in shares) |  |  | 13,598,898 |  |  |  |  |
Units Issued During Period, Price Per Unit (in dollars per share) |  |  | $ 10.00 |  |  |  |  |
Units Issued During Period, Number of Warrants (in shares) |  |  | 0.5 |  |  |  |  |
Sale of Unit, Price Per Unit (in dollars per share) |  |  | $ 10.00 |  |  |  |  |
Yellowstone Acquisition Company [Member] | IPO [Member] | Common Class A [Member] |  |  |  |  |  |  |  |
Units Issued During Period, Number of Common Stock, Shares (in shares) |  |  | 1 |  |  |  |  |
BOC Yellowstone LLC [Member] | Lead Investor in Yellowstone’s IPO [Member] |  |  |  |  |  |  |  |
Number of Investee's Shares Agreed to Transfer Upon Business Combination (in shares) |  | 206,250 |  |  |  |  |  |
BOC Yellowstone LLC [Member] | BOC Yellowstone II LLC [Member] |  |  |  |  |  |  |  |
Proceeds from Sale of Equity Method Investments |  | $ 309,375 |  |  |  |  |  |
BOC Yellowstone LLC [Member] | Class B Common Stock of Yellowstone Acquisition Company [Member] |  |  |  |  |  |  |  |
Payments to Acquire Investments, Total |  |  |  | $ 7,800,000 |  |  |  |
Investment Owned, Balance, Shares (in shares) |  |  |  | 3,399,724 |  |  |  |
BOC Yellowstone LLC [Member] | Class B Common Stock of Yellowstone Acquisition Company [Member] | BOC Yellowstone II LLC [Member] |  |  |  |  |  |  |  |
Number of Investee's Shares Transferred to Related Party for No Consideration (in shares) |  | 206,250 |  |  |  |  |  |
BOC Yellowstone LLC [Member] | Non-redeemable Private Placement Warrants [Member] |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  | $ 11.50 |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  |  | 7,719,779 |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) |  |  |  | 1 |  |  |  |

X
- Definition With regard to the additional financing agreed to provide in support of the transaction, which will be funded prior to the closing of the business combination (if certain conditions are met), this element represents the number of shares into which the additional equity investment will be converted. + References No definition available. + Details
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- Definition With regard to the additional financing agreed to provide in support of the transaction, which will be funded prior to the closing of the business combination (if certain conditions are met), this element represents the price per share of the shares into which the additional equity investment will be converted. + References No definition available. + Details
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- Definition Represents the amount of additional funding expected to be raised by the parties involved through a private placement investment to be consummated at the closing of the business combination. + References No definition available. + Details
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- Definition Represents the maximum value of the backstop agreed to be provided to the acquiree in a business combination. + References No definition available. + Details
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- Definition Represents the price per share of the backstop agreed to be provided to the acquiree in a business combination. + References No definition available. + Details
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- Definition Represents the gross proceeds the combined company expects to receive in a business acquisition, excluding additional funds that may be raised through a private placement investment. + References No definition available. + Details
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- Definition Represents the implied pro forma equity market value of the combined company at the closing of a business acquisition. + References No definition available. + Details
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- Definition Represents the minimum investment condition in cash and securities at the closing of a business combination. + References No definition available. + Details
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- Definition Represents the percentage of equity in the combined company to be retained by the acquiree's equityholders. + References No definition available. + Details
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- Definition Per unit amount received by subsidiary or equity investee for each unit issued or sold in the stock transaction. + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 + Details
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- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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- Definition Balance held at close of period in number of shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 50 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column B)) -URI http://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the purchase of all investments (debt, security, other) during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
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- Definition The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
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