Note 12 - Investments in Equity Method Affiliates (Details Textual) - IPO [Member] - USD ($) $ in Millions	1 Months Ended
Dec. 31, 2020	Sep. 30, 2020
Insurance SPAC II [Member]
Sale of Stock, Consideration Received on Transaction		$ 250
Insurance SPAC [Member]
Sale of Stock, Consideration Received on Transaction	$ 218

Cash received on stock transaction after deduction of issuance costs.

No definition available.

Name:	us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration