Note 6 - Other Borrowed Funds - Other Borrowed Funds (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other borrowed funds	$ 42,603	$ 35,949
Federal Home Loan Bank Advances [Member]
Other borrowed funds	35,718	28,625
Promissory Notes [Member]
Other borrowed funds	$ 6,885	$ 7,324

The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13,16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Name:	us-gaap_OtherBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant