Note 7 - Accrued Interest Receivable - Accrued Interest Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Interest Receivable	$ 7,006	$ 6,157
Loans Receivable [Member]
Interest Receivable	5,846	5,381
Investment Securities [Member]
Interest Receivable	1,148	748
Deposits in Banks [Member]
Interest Receivable	$ 12	$ 28

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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