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Note 8 - Earnings Per Share (Details)	3 Months Ended		9 Months Ended
Note 8 - Earnings Per Share (Details)	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Restricted Stock [Member] \| Common Class A [Member]
Note 8 - Earnings Per Share (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		1,590
Restricted Stock [Member] \| Common Class B [Member]
Note 8 - Earnings Per Share (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		265
Common Class A [Member]
Note 8 - Earnings Per Share (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	144,000	146,106	133,114	225,153
Common Class B [Member]
Note 8 - Earnings Per Share (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		24,351	8,566	37,526

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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