Note 8 - Stock-Based Compensation (Details) (USD $)	6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Salaries, Wages, and Related Expenses [Member]	Jun. 30, 2013 Salaries, Wages, and Related Expenses [Member]	Jun. 30, 2014 Salaries, Wages, and Related Expenses [Member]	Jun. 30, 2013 Salaries, Wages, and Related Expenses [Member]	Jun. 30, 2014 Other Operating Income (Expense) [Member] Restricted Stock [Member]	Jun. 30, 2014 Other Operating Income (Expense) [Member] Restricted Stock [Member]	Jun. 30, 2014 Common Class A [Member]	Jun. 30, 2014 Performance Shares [Member]	Jun. 30, 2013 Performance Shares [Member]	May 29, 2013 Third Amendment [Member]	May 29, 2013 Second Amendment [Member]
Note 8 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)	1,550,000											750,000	800,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)	674,591
Maximum Number Of Shares Of Class A Common Stock Awarded To Any Participant In The Incentive Plan In Any Calendar Year (in Shares)	200,000
Allocated Share-based Compensation Expense			$ 200,000	$ (300,000)	$ 200,000	$ (100,000)	$ 100,000	$ 100,000
Reversal of Previous Stock Compensation Expense	(141,000)									100,000	400,000
Shares Paid for Tax Withholding for Share Based Compensation (in Shares)									15,388
Share-based Compensation Arrangement by Share-based Payment Award, Per Share Weighted Average Price of Shares Purchased (in Dollars per share)									$ 11.28
Payments Related to Tax Withholding for Share-based Compensation	$ 174,000	$ 200,000							$ 200,000