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Note 6 - Earnings Per Common Share (Details)	12 Months Ended
Note 6 - Earnings Per Common Share (Details)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity Option [Member]
Note 6 - Earnings Per Common Share (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	176,500	304,600	697,725
Unvested Performance Unit Awards [Member]
Note 6 - Earnings Per Common Share (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	39,885	47,636	65,400

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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