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Note 6 - Financial Instruments and Fair Value (Details) - Derivative Financial Instruments (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2014
Interest Rate Swap Agreement 1 [Member] |
Derivative [Line Items] |
Current Notional Amount | $ 1,830
Fixed Interest Rate | 5.075%
Underlying Rate | 3 month LIBOR
Expiration Date | Jul. 01, 2015
Fair Value | (44)
Interest Rate Swap Agreement 2 [Member] |
Derivative [Line Items] |
Current Notional Amount | 3,780
Fixed Interest Rate | 5.075%
Underlying Rate | 3 month LIBOR
Expiration Date | Jul. 01, 2015
Fair Value | (92)
Interest Rate Swap Agreement 3 [Member] |
Derivative [Line Items] |
Current Notional Amount | 6,539
Fixed Interest Rate | 5.39%
Underlying Rate | 1 month LIBOR
Expiration Date | Dec. 31, 2014
Fair Value | (103)
Interest Rate Swap Agreement 4 [Member] |
Derivative [Line Items] |
Current Notional Amount | 1,264
Fixed Interest Rate | 5.39%
Underlying Rate | 1 month LIBOR
Expiration Date | Dec. 31, 2014
Fair Value | (20)
Interest Rate Swap Agreement 5 [Member] |
Derivative [Line Items] |
Current Notional Amount | 2,250
Fixed Interest Rate | 5.39%
Underlying Rate | 1 month LIBOR
Expiration Date | Dec. 31, 2014
Fair Value | (35)
Interest Rate Swap Agreement 6 [Member] |
Derivative [Line Items] |
Current Notional Amount | 5,091
Fixed Interest Rate | 5.39%
Underlying Rate | 1 month LIBOR
Expiration Date | Dec. 31, 2014
Fair Value | (80)
Interest Rate Swap Agreement 7 [Member] |
Derivative [Line Items] |
Current Notional Amount | 4,680
Fixed Interest Rate | 5.38%
Underlying Rate | 1 month LIBOR
Expiration Date | Jun. 29, 2015
Fair Value | (134)
Interest Rate Swap Agreement 8 [Member] |
Derivative [Line Items] |
Current Notional Amount | 720
Fixed Interest Rate | 5.29%
Underlying Rate | 1 month LIBOR
Expiration Date | Jun. 30, 2015
Fair Value | (20)
Interest Rate Swap Agreement 9 [Member] |
Derivative [Line Items] |
Current Notional Amount | 1,380
Fixed Interest Rate | 5.29%
Underlying Rate | 1 month LIBOR
Expiration Date | Jun. 30, 2015
Fair Value | (38)
Interest Rate Swap Agreement 10 [Member] |
Derivative [Line Items] |
Current Notional Amount | 6,960
Fixed Interest Rate | 5.29%
Underlying Rate | 1 month LIBOR
Expiration Date | Jun. 30, 2015
Fair Value | (189)
Interest Rate Swap Agreement 11 [Member] |
Derivative [Line Items] |
Current Notional Amount | 600
Fixed Interest Rate | 5.29%
Underlying Rate | 1 month LIBOR
Expiration Date | Jun. 30, 2015
Fair Value | (16)
Interest Rate Swap Agreement 12 [Member] |
Derivative [Line Items] |
Current Notional Amount | 2,412
Fixed Interest Rate | 5.29%
Underlying Rate | 1 month LIBOR
Expiration Date | Jun. 30, 2015
Fair Value | $ (66)

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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=7476318&loc=SL5624163-113959 + Details
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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=7476318&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=7476318&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
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- Definition The reference rate for the variable rate of the interest rate derivative, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Details
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Period Type: | duration

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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
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