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Note 12 - Investments in Equity Method Affiliates - Investments in Equity Method Affiliates (Details) - USD ($) $ in Thousands	1 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Balance									$ 3,799
Investments / advances									12,675	4,352
Distributions / repayments									84
Earnings / (loss) realized	$ (244)	$ (1,371)	$ (1,233)	$ (107)	$ (188)	$ (109)	$ (248)	$ (8)	(2,955)	(553)
Investments / advances									12,722
Distributions / repayments									(84)
Balance	13,482				3,799				13,482	3,799
Insurance SPAC [Member]
Balance									3,222
Investments / advances										3,775
Distributions / repayments									84
Earnings / (loss) realized									(3,656)	(553)
Investments / advances									10,325
Distributions / repayments									(84)
Balance	9,807				3,222				9,807	3,222
SPAC Sponsor Entities [Member]
Balance
Investments / advances
Distributions / repayments
Earnings / (loss) realized									(18)
Investments / advances									122
Distributions / repayments
Balance	104								104
AOI [Member]
Balance									559
Investments / advances					1					559
Distributions / repayments
Earnings / (loss) realized									360
Investments / advances									2,097
Distributions / repayments
Balance	3,016				559				3,016	559
CK Capital Partners B.V. [Member]
Balance									18
Investments / advances										18
Distributions / repayments
Earnings / (loss) realized									278
Investments / advances
Distributions / repayments
Balance	296				18				296	18
SPAC Funds [Member]
Balance
Investments / advances
Distributions / repayments
Earnings / (loss) realized									81
Investments / advances									178
Distributions / repayments
Balance	$ 259								$ 259

X

- Definition

The outflow associated with the purchase of or advances to an 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. Including noncash transfers.

+ References

No definition available.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
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- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
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- Definition

The cash outflow associated with the purchase of or advances to an 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

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Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

+ References

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