Note 19 - Condensed Balance Sheet (Parentheticals) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Condensed Balance Sheet Statements Captions [Line Items]
Investment securities, cost	$ 11,419	$ 12,784
Parent Company [Member]
Condensed Balance Sheet Statements Captions [Line Items]
Investment securities, cost	$ 11,419	$ 12,784

Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

No definition available.

Name:	us-gaap_EquitySecuritiesFvNiCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant