Note 6 - Derivative Financial Instruments (Details) - Jun. 30, 2015 - USD ($) $ in Thousands	Total
Interest Rate Swap Agreement 1 [Member]
Derivative Asset, Notional Amount	$ 1,667
Interest Rate Swap	5.075%
Interest Rate Swap	Jul. 01, 2015
Interest Rate Swap
Interest Rate Swap Agreement 2 [Member]
Derivative Asset, Notional Amount	$ 3,444
Interest Rate Swap	5.075%
Interest Rate Swap	Jul. 01, 2015
Interest Rate Swap

Nominal or face amount used to calculate payments on the derivative asset.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

Name:	us-gaap_DerivativeAssetNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant