Note 6 - Financial Instruments and Fair Value (Details) - Derivative Financial Instruments (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Derivative [Line Items]
Notional Amount	$ 39,200
Interest Rate Swap Agreement 1 [Member]
Derivative [Line Items]
Notional Amount	1,911
Fixed Interest Rate	5.075%
Underlying Rate	3 month LIBOR
Expiration Date	Jul. 01, 2015
Fair Value	(61)
Interest Rate Swap Agreement 2 [Member]
Derivative [Line Items]
Notional Amount	3,948
Fixed Interest Rate	5.075%
Underlying Rate	3 month LIBOR
Expiration Date	Jul. 01, 2015
Fair Value	(126)
Interest Rate Swap Agreement 7 [Member]
Derivative [Line Items]
Notional Amount	6,840
Fixed Interest Rate	5.39%
Underlying Rate	1 month LIBOR
Expiration Date	Dec. 31, 2014
Fair Value	(169)
Interest Rate Swap Agreement 3 [Member]
Derivative [Line Items]
Notional Amount	1,322
Fixed Interest Rate	5.39%
Underlying Rate	1 month LIBOR
Expiration Date	Dec. 31, 2014
Fair Value	(33)
Interest Rate Swap Agreement 4 [Member]
Derivative [Line Items]
Notional Amount	2,354
Fixed Interest Rate	5.39%
Underlying Rate	1 month LIBOR
Expiration Date	Dec. 31, 2014
Fair Value	(58)
Interest Rate Swap Agreement 5 [Member]
Derivative [Line Items]
Notional Amount	5,326
Fixed Interest Rate	5.39%
Underlying Rate	1 month LIBOR
Expiration Date	Dec. 31, 2014
Fair Value	(132)
Interest Rate Swap Agreement 6 [Member]
Derivative [Line Items]
Notional Amount	4,888
Fixed Interest Rate	5.38%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 29, 2015
Fair Value	(185)
Interest Rate Swap Agreement 8 [Member]
Derivative [Line Items]
Notional Amount	752
Fixed Interest Rate	5.29%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 30, 2015
Fair Value	(27)
Interest Rate Swap Agreement 9 [Member]
Derivative [Line Items]
Notional Amount	1,441
Fixed Interest Rate	5.29%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 30, 2015
Fair Value	(53)
Interest Rate Swap Agreement 10 [Member]
Derivative [Line Items]
Notional Amount	7,269
Fixed Interest Rate	5.29%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 30, 2015
Fair Value	(265)
Interest Rate Swap Agreement 11 [Member]
Derivative [Line Items]
Notional Amount	627
Fixed Interest Rate	5.29%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 30, 2015
Fair Value	(23)
Interest Rate Swap Agreement 12 [Member]
Derivative [Line Items]
Notional Amount	2,519
Fixed Interest Rate	5.29%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 30, 2015
Fair Value	$ (92)