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SHARE BASED COMPENSATION PLANS (Details) (USD $)
 12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Effect to income of share-based compensation expense, net of tax benefits [Abstract]      
Total employee stock-based compensation expense recognized in income, net of tax effects of $66, $51 and $30, respectively $ 120,000 $ 103,000 $ 76,000
Tax effects of employee's stock-based compensation expense recognized income 66,000 51,000 30,000
Stock based compensation expense not yet recognized in income 56,000    
Weighted average remaining period for unrecognized stock based compensation 1 year 10 months 24 days    
Period that options are issued 10 years    
Percentage of options vesting at either grant date or over four year period (in hundredths) 100.00%    
Period that options vest 4 years    
Share-based payment award, fair value assumptions, method used Black-Scholes valuation model Black-Scholes valuation model Black-Scholes valuation model
Vested in period, fair value 124,000 113,000 79,000
Number of Shares [Roll Forward]      
Options outstanding, beginning of period (in shares) 318,648 389,358  
Granted (in shares) 0 0  
Exercised (in shares) (82,882) (65,399) (19,669)
Forfeited or expired (in shares) 0 (5,311)  
Options outstanding, end of period (in shares) 235,766 318,648 389,358
Options exercisable end of year (in shares) 235,766 315,898  
Weighted Average Exercise Price [Roll Forward]      
Options outstanding, beginning of period (in dollars per share) $ 24.44 $ 23.52  
Granted (in dollars per share) $ 0 $ 0  
Exercised (in dollars per share) $ 22.31 $ 18.09  
Forfeited or expired (in dollars per share) $ 0 $ 35.06  
Options outstanding, end of period (in dollars per share) $ 25.20 $ 24.44 $ 23.52
Options exercisable end of year (in dollars per share) $ 25.20 $ 24.40  
Weighted Average Remaining Contractual Term (Yrs) [Abstract]      
Options outstanding , beginning of period 3 years 9 months 11 days 4 years 2 months 5 days 5 years 0 months 29 days
Options outstanding, end of period 3 years 9 months 11 days 4 years 2 months 5 days 5 years 0 months 29 days
Options exercisable end of year (in shares) 3 years 9 months 11 days 4 years 1 month 28 days  
Aggregate Intrinsic Value [Abstract]      
Options outstanding, beginning of period 4,376,000 1,199,000  
Granted 0    
Exercised 1,389,000 807,000 117,000
Forfeited or expired 0 0  
Options outstanding, end of period 2,507,000 4,376,000 1,199,000
Options exercisable end of year $ 2,507,000 $ 4,352,000  
Nonvested Shares Outstanding, Number of Shares [Roll Forward]      
Nonvested shares outstanding, beginning of period (in shares) 4,000 0  
Granted (in shares) 4,267 8,900  
Vested (in shares) (4,267) (4,900)  
Forfeited or expired (in shares) 0 0  
Nonvested shares outstanding, end of period (in shares) 4,000 4,000 0
Nonvested Shares Outstanding, Weighted Average Grant Date Fair Value [Roll Forward]      
Nonvested shares outstanding, beginning of period (in dollars per share) $ 25.67 $ 0  
Granted (in dollars per share) $ 37.82 $ 24.20  
Vested (in dollars per share) $ 35.07 $ 23.00  
Forfeited or expired (in dollars per share) $ 0 $ 0  
Nonvested shares outstanding, end of period (in dollars per share) $ 28.61 $ 25.67 $ 0