EQUITY-BASED INCENTIVE AWARDS (Details) (USD $)	6 Months Ended
	Mar. 31, 2013
EQUITY-BASED INCENTIVE AWARDS
Number of shares of the company's common stock permitted for issuance under the plan	150,000
Number of shares awarded pursuant to the plan	131,195
Number of shares that may be awarded under the plan	18,805
Stock Options
Omnibus plan and stock option activity
Expiration period	10 years
Stock options issued and outstanding
Number Outstanding (in shares)	45,000
Weighted-Average Exercise Price (in dollars per share)	$ 35.28
Number Exercisable (in shares)	28,500
Exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 22.26
Number of Shares
Outstanding at the beginning of the period (in shares)	37,042
Granted (in shares)	8,000
Exercised (in shares)	(42)
Outstanding at the end of the period (in shares)	45,000
Weighted Average Exercise Price
Outstanding at beginning of the period (in dollars per share)	$ 29.43
Granted (in dollars per share)	$ 62.33
Exercised (in dollars per share)	$ 28.80
Outstanding at the end of the period (in dollars per share)	$ 35.28
Stock Options | Minimum
Omnibus plan and stock option activity
Vesting period	3 years
Stock Options | Maximum
Omnibus plan and stock option activity
Vesting period	5 years
Stock Options | Fiscal 2007
Stock options issued and outstanding
Number Outstanding (in shares)	25,000
Remaining Weighted-Average Contractual Life	3 years 8 months 12 days
Weighted-Average Exercise Price (in dollars per share)	$ 18.00
Number Exercisable (in shares)	25,000
Exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 18.00
Number of Shares
Outstanding at the end of the period (in shares)	25,000
Weighted Average Exercise Price
Outstanding at the end of the period (in dollars per share)	$ 18.00
Stock Options | Fiscal 2010
Stock options issued and outstanding
Number Outstanding (in shares)	5,500
Remaining Weighted-Average Contractual Life	7 years 29 days
Weighted-Average Exercise Price (in dollars per share)	$ 51.50
Number Exercisable (in shares)	2,200
Exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 51.50
Number of Shares
Outstanding at the end of the period (in shares)	5,500
Weighted Average Exercise Price
Outstanding at the end of the period (in dollars per share)	$ 51.50
Stock Options | Fiscal 2012
Stock options issued and outstanding
Number Outstanding (in shares)	6,500
Remaining Weighted-Average Contractual Life	8 years 6 months 29 days
Weighted-Average Exercise Price (in dollars per share)	$ 54.74
Number Exercisable (in shares)	1,300
Exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 54.74
Number of Shares
Outstanding at the end of the period (in shares)	6,500
Weighted Average Exercise Price
Outstanding at the end of the period (in dollars per share)	$ 54.74
Stock Options | Fiscal 2012 | Minimum
Stock options issued and outstanding
Weighted-Average Exercise Price (in dollars per share)	$ 53.80
Weighted Average Exercise Price
Outstanding at the end of the period (in dollars per share)	$ 53.80
Stock Options | Fiscal 2012 | Maximum
Stock options issued and outstanding
Weighted-Average Exercise Price (in dollars per share)	$ 65.97
Weighted Average Exercise Price
Outstanding at the end of the period (in dollars per share)	$ 65.97
Stock Options | Fiscal 2013
Stock options issued and outstanding
Number Outstanding (in shares)	8,000
Remaining Weighted-Average Contractual Life	9 years 6 months 25 days
Weighted-Average Exercise Price (in dollars per share)	$ 62.33
Number of Shares
Outstanding at the end of the period (in shares)	8,000
Weighted Average Exercise Price
Outstanding at the end of the period (in dollars per share)	$ 62.33