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Note 6 - Financial Instruments and Fair Value (Details) - Derivative Financial Instruments (USD $) In Thousands, unless otherwise specified | 9 Months Ended
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Sep. 30, 2014
Interest Rate Swap Agreement 1 [Member] |
Derivative [Line Items] |
Current Notional Amount | $ 1,749
Fixed Interest Rate | 5.075%
Expiration Date | Jul. 01, 2015
Fair Value | (26)
Interest Rate Swap Agreement 2 [Member] |
Derivative [Line Items] |
Current Notional Amount | 3,612
Fixed Interest Rate | 5.075%
Expiration Date | Jul. 01, 2015
Fair Value | (54)
Interest Rate Swap Agreement 3 [Member] |
Derivative [Line Items] |
Current Notional Amount | 6,237
Fixed Interest Rate | 5.39%
Expiration Date | Dec. 31, 2014
Fair Value | (34)
Interest Rate Swap Agreement 4 [Member] |
Derivative [Line Items] |
Current Notional Amount | 1,206
Fixed Interest Rate | 5.39%
Expiration Date | Dec. 31, 2014
Fair Value | (6)
Interest Rate Swap Agreement 5 [Member] |
Derivative [Line Items] |
Current Notional Amount | 2,146
Fixed Interest Rate | 5.39%
Expiration Date | Dec. 31, 2014
Fair Value | (12)
Interest Rate Swap Agreement 6 [Member] |
Derivative [Line Items] |
Current Notional Amount | 4,856
Fixed Interest Rate | 5.39%
Expiration Date | Dec. 31, 2014
Fair Value | (26)
Interest Rate Swap Agreement 7 [Member] |
Derivative [Line Items] |
Current Notional Amount | 4,472
Fixed Interest Rate | 5.38%
Expiration Date | Jun. 29, 2015
Fair Value | (80)
Interest Rate Swap Agreement 8 [Member] |
Derivative [Line Items] |
Current Notional Amount | 688
Fixed Interest Rate | 5.29%
Expiration Date | Jun. 30, 2015
Fair Value | (12)
Interest Rate Swap Agreement 9 [Member] |
Derivative [Line Items] |
Current Notional Amount | 1,319
Fixed Interest Rate | 5.29%
Expiration Date | Jun. 30, 2015
Fair Value | (23)
Interest Rate Swap Agreement 10 [Member] |
Derivative [Line Items] |
Current Notional Amount | 6,650
Fixed Interest Rate | 5.29%
Expiration Date | Jun. 30, 2015
Fair Value | (114)
Interest Rate Swap Agreement 11 [Member] |
Derivative [Line Items] |
Current Notional Amount | 573
Fixed Interest Rate | 5.29%
Expiration Date | Jun. 30, 2015
Fair Value | (10)
Interest Rate Swap Agreement 12 [Member] |
Derivative [Line Items] |
Current Notional Amount | 2,305
Fixed Interest Rate | 5.29%
Expiration Date | Jun. 30, 2015
Fair Value | $ (40)

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- Definition Fair value of all liability derivatives designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 + Details
Name: | us-gaap_CashFlowHedgeDerivativeInstrumentLiabilitiesAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Nominal or face amount used to calculate payments on the derivative asset. + References Reference 1: 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=35706170&loc=SL5580258-113959 Reference 2: 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=35706170&loc=SL5579245-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 + Details
Name: | us-gaap_DerivativeAssetNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
Name: | us-gaap_DerivativeFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DerivativeMaturityDates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration