Note 8 - Stock-Based Compensation (Details) - Phantom Stock Plan: (USD $)	6 Months Ended
	Jun. 30, 2013
Phantom Stock Plan: [Abstract]
Shares	50,067
Fair Value (in Dollars per share)	$ 15.34
Vested at June 30, 2013	58,325
Vested at June 30, 2013 (in Dollars per share)	$ 16.45
Granted	9,051
Granted (in Dollars per share)	$ 15.62
Distributions	(500)
Distributions (in Dollars per share)	$ 16.26
Shares	58,618
Fair Value (in Dollars per share)	$ 16.45