Note 22 - Segment and Geographic Information - Balance Sheet Data (Details) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021	Dec. 31, 2020
Total Assets		$ 2,271,095	$ 3,656,304
Investment in equity method affiliates		14,369	48,238	$ 13,482
Goodwill	[1]	109	109
Intangible assets	[1]	166	166
Operating Segments [Member]
Total Assets		2,233,169	3,611,715
Investment in equity method affiliates		14,369	48,238
Goodwill	[1]	109	109
Intangible assets	[1]	166	166
Segment Reconciling Items [Member]
Total Assets	[2]	37,926	44,589
Investment in equity method affiliates	[2]	0	0
Goodwill	[1],[2]	0	0
Intangible assets	[1],[2]	0	0
Capital Markets [Member] | Operating Segments [Member]
Total Assets		2,177,312	3,501,973
Investment in equity method affiliates		0	0
Goodwill	[1]	54	54
Intangible assets	[1]	166	166
Asset Management Segment [Member] | Operating Segments [Member]
Total Assets		3,699	5,251
Investment in equity method affiliates		0	0
Goodwill	[1]	55	55
Intangible assets	[1]	0	0
Principal Investing [Member] | Operating Segments [Member]
Total Assets		52,158	104,491
Investment in equity method affiliates		14,369	48,238
Goodwill	[1]	0	0
Intangible assets	[1]	$ 0	$ 0

[1] Goodwill and intangible assets are allocated to the Capital Markets and Asset Management business segments as indicated in the table from above.

[2] Unallocated assets primarily include (1) amounts due from related parties; (2) furniture and equipment, net; and (3) other assets that are not considered necessary for an understanding of business segment assets and such amounts are excluded in business segment reporting to the chief operating decision maker.