Note 4 - Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Oct. 01, 2021	Sep. 30, 2021	Dec. 31, 2020	Dec. 01, 2020	Dec. 31, 2019
Goodwill, Ending Balance	$ 110,247	$ 7,900		$ 121,130	$ 39,000	$ 82,104
PWI Holdings [Member]
Cash and cash equivalents					90
Restricted cash					21,578
Service fee receivable					1,459
Other receivables					2,748
Income taxes recoverable					60
Property and equipment, net					175
Right-of-use asset					254
Goodwill, Ending Balance			$ 20,200		20,238
Other assets					1,321
Total assets					67,473
Accrued expenses and other liabilities					8,165
Lease liability					255
Net deferred income tax liabilities					4,229
Deferred service fees					30,400
Total liabilities					43,049
Purchase price					24,424
PWI Holdings [Member] | Trade Names [Member]
Intangible asset subject to amortization - trade name					4,550
PWI Holdings [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					$ 15,000
Ravix Financial, Inc [Member]
Cash and cash equivalents		225
Restricted cash		752
Other receivables		17
Right-of-use asset		116
Goodwill, Ending Balance		7,905
Other assets		133
Total assets		16,679
Accrued expenses and other liabilities		1,546
Lease liability		116
Net deferred income tax liabilities		1,796
Total liabilities		3,471
Purchase price		13,208
Service fee receivable		1,031
Income taxes payable		13
Ravix Financial, Inc [Member] | Trade Names [Member]
Intangible asset subject to amortization - trade name		2,500
Ravix Financial, Inc [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 4,000