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Note 6 - Financial Instruments and Fair Value (Details) - Derivative Financial Instruments (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
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)