Note 6 - Financial Instruments and Fair Value (Details) - Derivative Financial Instruments (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Derivative [Line Items]
Notional Amount	$ 40,000
Interest Rate Swap Agreement 1 [Member]
Derivative [Line Items]
Notional Amount	1,952
Fixed Interest Rate	5.075%
Underlying Rate	3 month LIBOR
Expiration Date	Jul. 01, 2015
Fair Value	(67)
Interest Rate Swap Agreement 2 [Member]
Derivative [Line Items]
Notional Amount	4,032
Fixed Interest Rate	5.075%
Underlying Rate	3 month LIBOR
Expiration Date	Jul. 01, 2015
Fair Value	(138)
Interest Rate Swap Agreement 3 [Member]
Derivative [Line Items]
Notional Amount	6,992
Fixed Interest Rate	5.39%
Underlying Rate	1 month LIBOR
Expiration Date	Dec. 31, 2014
Fair Value	(200)
Interest Rate Swap Agreement 4 [Member]
Derivative [Line Items]
Notional Amount	1,351
Fixed Interest Rate	5.39%
Underlying Rate	1 month LIBOR
Expiration Date	Dec. 31, 2014
Fair Value	(39)
Interest Rate Swap Agreement 5 [Member]
Derivative [Line Items]
Notional Amount	2,406
Fixed Interest Rate	5.39%
Underlying Rate	1 month LIBOR
Expiration Date	Dec. 31, 2014
Fair Value	(69)
Interest Rate Swap Agreement 6 [Member]
Derivative [Line Items]
Notional Amount	5,443
Fixed Interest Rate	5.39%
Underlying Rate	1 month LIBOR
Expiration Date	Dec. 31, 2014
Fair Value	(156)
Interest Rate Swap Agreement 7 [Member]
Derivative [Line Items]
Notional Amount	4,992
Fixed Interest Rate	5.38%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 29, 2015
Fair Value	(208)
Interest Rate Swap Agreement 8 [Member]
Derivative [Line Items]
Notional Amount	768
Fixed Interest Rate	5.29%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 30, 2015
Fair Value	(31)
Interest Rate Swap Agreement 9 [Member]
Derivative [Line Items]
Notional Amount	1,472
Fixed Interest Rate	5.29%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 30, 2015
Fair Value	(59)
Interest Rate Swap Agreement 10 [Member]
Derivative [Line Items]
Notional Amount	7,424
Fixed Interest Rate	5.29%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 30, 2015
Fair Value	(295)
Interest Rate Swap Agreement 11 [Member]
Derivative [Line Items]
Notional Amount	640
Fixed Interest Rate	5.29%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 30, 2015
Fair Value	(25)
Interest Rate Swap Agreement 12 [Member]
Derivative [Line Items]
Notional Amount	2,573
Fixed Interest Rate	5.29%
Underlying Rate	1 month LIBOR
Expiration Date	Jun. 30, 2015
Fair Value	$ (102)