Note 11 - Stock Repurchase Program (Details)	Aug. 11, 2014 USD ($) shares	May. 07, 2015 USD ($)
Note 11 - Stock Repurchase Program (Details) [Line Items]
Stock Repurchase Program, Number of Plans		2
Stock Repurchased During Period, Shares (in Shares) \| shares	125,000
Stock Repurchased During Period, Value	$ 6,995,000
Common Stock [Member]
Note 11 - Stock Repurchase Program (Details) [Line Items]
Stock Repurchase Program, Authorized Amount		$ 25,000,000
Preferred Stock [Member]
Note 11 - Stock Repurchase Program (Details) [Line Items]
Stock Repurchase Program, Authorized Amount		$ 25,000,000

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30, 31

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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