Note 3 - Interest Bearing Time Deposits in Banks (Details) - Interest-bearing Deposits [Member]	12 Months Ended
Dec. 31, 2015
Minimum [Member]
Note 3 - Interest Bearing Time Deposits in Banks (Details) [Line Items]
Maturity of Time Deposits	1 year
Maximum [Member]
Note 3 - Interest Bearing Time Deposits in Banks (Details) [Line Items]
Maturity of Time Deposits	5 years

Period of time between issuance and maturity of customer deposits, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

Name:	us-gaap_MaturityOfTimeDeposits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration