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Note 8 - Basic And Diluted Earnings Per Common Share: (Details)
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Mar. 31, 2012
Dutch Auction Member
Jun. 30, 2013
Dutch Auction Member
Jun. 30, 2013
Stock Repurchase [Member]
Note 8 - Basic And Diluted Earnings Per Common Share: (Details) [Line Items]            
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 478,000   955,000      
Stock Repurchased and Retired During Period, Shares (in Shares)   1,115,304 (4,114,121) 7,570,236 4,114,121 143,073