Annual report pursuant to Section 13 and 15(d)

SHARE-BASED PAYMENTS (Details)

v3.3.0.814
SHARE-BASED PAYMENTS (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2013
All Plans [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Total stock-based compensation cost $ 9,097 $ 6,812 $ 5,562
Future income tax benefit from compensation expense recognized 3,548 2,657 2,169
Cash received from stock options exercised 4,015 7,951 974
Tax benefit realized from options exercised $ 350 $ 698 99
All Plans [Member] | Stock Options [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Vesting percentage 33.00%    
Expiration period 10 years    
Restricted stock activity [Roll Forward]      
Expired or forfeited (in shares) (68,837)    
Stock option activity [Roll Forward]      
Outstanding, beginning of period (in shares) 512,322    
Exercised (in shares) (105,211)    
Expired or forfeited (in shares) (69,173)    
Outstanding, end of period (in shares) 337,938 512,322  
Exercisable (in shares) 171,532    
Outstanding, weighted-average exercise price, beginning of period (in dollars per share) $ 38.62    
Exercised, weighted-average exercise price (in dollars per share) 38.17    
Expired or forfeited, weighted-average exercise price (in dollars per share) 36.53    
Outstanding, weighted-average exercise price, end of period (in dollars per share) 39.19 $ 38.62  
Exercisable, weighted-average exercise price (in dollars per share) $ 39.55    
Outstanding, weighted-average remaining contractual term 8 months 12 days    
Outstanding, aggregate intrinsic value $ 3,304    
Exercisable, weighted-average remaining contractual term 9 months 18 days    
Exercisable, aggregate intrinsic value $ 1,616    
Intrinsic value of options exercised $ 931 $ 1,653 $ 294
Non-vested options activity [Roll Forward]      
Non-vested at beginning of period (in shares) 312,442    
Vested (in shares) 77,199    
Expired or forfeited (in shares) (68,837)    
Non-vested at end of period (in shares) 320,804 312,442  
Non-vested weighted-average grant-date fair value, beginning of period (in dollars per share) $ 11.21    
Vested, weighted-average grant-date fair value (in dollars per share) 12.23    
Expired or forfeited, weighted-average grant-date fair value (in dollars per share) 11.70    
Non-vested weighted-average grant-date fair value, end of period (in dollars per share) $ 11.35 $ 11.21  
All Plans [Member] | Stock Options [Member] | After 3 Years [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Vesting percentage 33.00%    
Vesting period 3 years    
All Plans [Member] | Stock Options [Member] | After 4 Years [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Vesting period 4 years    
All Plans [Member] | Stock Options [Member] | After 5 Years [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Vesting period 5 years    
All Plans [Member] | Restricted Stock [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Expiration period 5 years    
Restricted stock activity [Roll Forward]      
Non-vested at beginning of period (in shares) 575,150    
Granted (in shares) 215,370    
Vested (in shares) (183,089)    
Expired or forfeited (in shares) (36,864)    
Non-vested at end of period (in shares) 570,567 575,150  
Non-vested weighted-average grant-date fair value, beginning of period (in dollars per share) $ 33.83    
Granted, weighted-average grant-date fair value (in dollars per share) 40.07    
Vested, weighted-average grant-date fair value (in dollars per share) 36.51    
Expired or forfeited, weighted-average grant-date fair value (in dollars per share) 28.70    
Non-vested weighted-average grant-date fair value, end of period (in dollars per share) $ 35.66 $ 33.83  
Unrecognized compensation cost [Abstract]      
Unrecognized compensation cost on non-vested awards $ 7,681    
Weighted average period of recognition of unrecognized compensation cost on non-vested awards 1 year 7 months 6 days    
Non-vested options activity [Roll Forward]      
Expired or forfeited (in shares) (36,864)    
Fair value assumptions [Abstract]      
Expected volatility 22.20% 26.60% 29.50%
Dividend yield 1.00% 1.10% 1.20%
Average risk free interest rate 1.70% 1.40% 0.60%
Weighted average expected term 1 year 9 months 18 days 2 years 2 years
All Plans [Member] | Restricted Stock [Member] | After 3 Years [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Vesting percentage 50.00%    
Vesting period 3 years    
All Plans [Member] | Restricted Stock [Member] | Attainment of Pre-Defined Levels of Appreciation in Market Value [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Vesting percentage 16.66%    
All Plans [Member] | Restricted Stock [Member] | Fiscal 2013 and Thereafter [Member] | After 3 Years [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Vesting percentage 50.00%    
Vesting period 3 years    
All Plans [Member] | Restricted Stock [Member] | Fiscal 2013 and Thereafter [Member] | Attainment of Pre-Defined Levels of Appreciation in Market Value [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Vesting percentage 8.33%    
All Plans [Member] | Restricted Stock [Member] | Fiscal 2013 and Thereafter [Member] | Attainment of Pre-Defined Levels of Adjusted Earnings Per Share [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Vesting percentage 8.33%    
2012 Equity Incentive Plan [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Term of plan 10 years    
Maximum number of shares available for grants or awards (in shares) 2,500,000    
Shares reserved for future issuance under award plan (in shares) 1,476,798    
Director Fee Plans [Member]      
Director Fee Plan, aggregate disclosures [Abstract]      
Shares deferred under the director fee plan (in shares) 17,005    
Value of annual stock-based grant $ 110    
Total stock options granted to date (in shares) 22,300    
Option awards outstanding and vested (in shares) 0    
Total restricted stock awards granted to date (in shares) 136,568    
Restricted stock awards unvested (in shares) 33,418    
2014 Director Fee Plan [Member]      
Share-based compensation, aggregate disclosures [Abstract]      
Shares reserved for future issuance under award plan (in shares) 150,000    
Director Fee Plan, aggregate disclosures [Abstract]      
Annual retainer fee paid to non-employee directors $ 75    
Annual retainer fee paid to non-employee chairman of the board $ 175