Note 19 - Stock Repurchase Program (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	4 Months Ended	9 Months Ended
Sep. 30, 2021	Aug. 05, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 02, 2021	Apr. 01, 2021
Stock Repurchase Program, Authorized Amount					$ 125,000	$ 75,000
Treasury Stock, Shares, Acquired (in shares)	942,613	1,832,481
Treasury Stock, Value, Acquired, Cost Method	$ 37,139	$ 74,900	$ 100,668	$ 12,880
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)	$ 39.40	$ 40.93

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

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