The number of investee's share would be transferred to counter party upon the completion of any business combination.

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The number of investee's shares were transferred to a related party for no consideration.

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Per unit amount received by subsidiary or equity investee for each unit issued or sold in the stock transaction.

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No definition available.

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The number of units issued during the period

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The number of common stock shares in each unit issued during the period.

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No definition available.

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The number of warrants per units issued during the period.

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No definition available.

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The price per unit of the units issued during the period.

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No definition available.

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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
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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.

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No definition available.

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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.

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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.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Balance held at close of period in number of shares.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The cash inflow associated with the amount received from entity's first offering of stock to the public.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 17 - Special Purpose Acquisition Company (Details Textual) - USD ($)		1 Months Ended	3 Months Ended		4 Months Ended
	Nov. 16, 2020	Oct. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Nov. 30, 2020	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			$ 518,225,946	$ 218,274,275
Yellowstone Acquisition Company [Member]
Equity Method Investment, Ownership Percentage					20.00%
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, Number of Warrants (in shares)		0.5
Sale of Unit, Price Per Unit (in dollars per share)		$ 10.00
Units Issued During Period, 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