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SHARE-BASED PAYMENTS (Details) (USD $) | 12 Months Ended
--- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2011
Share-based compensation, aggregate disclosures [Abstract] |  |  |
Total stock-based compensation cost | $ 5,562,000 | $ 5,472,000 | $ 6,972,000
Future income tax benefit from compensation expense recognized | 2,169,000 | 2,134,000 | 2,719,000
Cash received from stock options exercised | 974,000 | 264,000 | 1,859,000
Tax benefit realized from options exercised | 99,000 | 22,000 | 278,000
2007 Equity Incentive Plan [Member] |  |  |
Share-based compensation, aggregate disclosures [Abstract] |  |  |
Term of plan (in years) | 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) | 2,500,000 |  |
Restricted Stock [Member] |  |  |
Share-based compensation, aggregate disclosures [Abstract] |  |  |
Vesting rights | With respect to outstanding restricted share grants, for grants made prior to fiscal 2013, generally one-half of the shares vest on the third anniversary of the grant, with the remaining one-half of the shares vesting in one-third increments upon attainment of pre-defined levels of appreciation in the market value of the Company's Class A Common Stock. |  |
Award expiration | Unvested restricted shares generally expire on the earlier of five years from the date of grant, upon employment termination, or within specified time limits following voluntary employment termination (with the consent of the Company), retirement or death. The Company issues restricted shares from treasury shares. |  |
Restricted stock activity [Roll Forward] |  |  |
Non-vested at beginning of period (in shares) | 551,389 |  |
Granted (in shares) | 236,500 |  |
Vested (in shares) | (99,226) |  |
Expired or forfeited (in shares) | (47,264) |  |
Non-vested at end of period (in shares) | 641,399 | 551,389 |
Non-vested weighted-average grant-date fair value, beginning of period (in dollars per share) | $ 32.56 |  |
Granted, weighted-average grant-date fair value (in dollars per share) | $ 25.22 |  |
Vested, weighted-average grant-date fair value (in dollars per share) | $ 35.95 |  |
Expired or forfeited, weighted-average grant-date fair value (in dollars per share) | $ 30.75 |  |
Non-vested weighted-average grant-date fair value, end of period (in dollars per share) | $ 29.46 | $ 32.56 |
Unrecognized compensation cost [Abstract] |  |  |
Unrecognized compensation cost on non-vested awards | 4,022,000 |  |
Weighted average period of recognition of unrecognized compensation cost on non-vested awards (in years) | 1 year 7 months 6 days |  |
Non-vested options activity [Roll Forward] |  |  |
Expired or forfeited (in shares) | (47,264) |  |
Fair value assumptions [Abstract] |  |  |
Expected volatility (in hundredths) | 29.50% | 30.40% | 30.00%
Dividend yield (in hundredths) | 1.20% | 1.00% | 1.00%
Average risk free interest rate (in hundredths) | 0.60% | 0.90% | 1.20%
Weighted average expected term (in years) | 2 years | 2 years | 2 years
Stock Options [Member] |  |  |
Share-based compensation, aggregate disclosures [Abstract] |  |  |
Exercisable rights | Outstanding stock options are generally exercisable in one-third increments upon the attainment of pre-defined levels of appreciation in the market value of the Company's Class A Common Stock. |  |
Vesting rights | options generally vest in one-third increments after three, four and five years, respectively, from the grant date (but, in any event, not until the attainment of the market value thresholds). |  |
Award expiration | The options expire on the earlier of ten years from the date of grant, upon employment termination, or within specified time limits following voluntary employment termination (with the consent of the Company), retirement or death. The Company generally settles employee stock option exercises with treasury shares. |  |
Restricted stock activity [Roll Forward] |  |  |
Expired or forfeited (in shares) | (24,117) |  |
Stock option activity [Roll Forward] |  |  |
Outstanding, beginning of period (in shares) | 840,282 |  |
Granted (in shares) | 0 |  |
Exercised (in shares) | (38,475) |  |
Expired or forfeited (in shares) | (56,983) |  |
Outstanding, end of period (in shares) | 744,824 | 840,282 |
Exercisable (in shares) | 413,069 |  |
Outstanding, weighted-average exercise price, beginning of period (in dollars per share) | $ 37.15 |  |
Granted, weighted-average exercise price (in dollars per share) | $ 0 |  |
Exercised, weighted-average exercise price (in dollars per share) | $ 25.56 |  |
Expired or forfeited, weighted-average exercise price (in dollars per share) | $ 37.10 |  |
Outstanding, weighted-average exercise price, end of period (in dollars per share) | $ 37.76 | $ 37.15 |
Exercisable, weighted-average exercise price (in dollars per share) | $ 36.94 |  |
Outstanding, weighted-average remaining contractual term (in years) | 2 years 2 months 12 days |  |
Outstanding, aggregate intrinsic value | 240.00 |  |
Exercisable, weighted-average remaining contractual term (in years) | 1 year 10 months 24 days |  |
Exercisable, aggregate intrinsic value | 472.00 |  |
Intrinsic value of options exercised | 294,000 | 57,000 | 743,000
Non-vested options activity [Roll Forward] |  |  |
Non-vested at beginning of period (in shares) | 355,872 |  |
Granted (in shares) | 0 |  |
Vested (in shares) | 0 |  |
Expired or forfeited (in shares) | (24,117) |  |
Non-vested at end of period (in shares) | 331,755 | 355,872 |
Non-vested weighted-average grant-date fair value, beginning of period (in dollars per share) | $ 11.35 |  |
Granted, weighted-average grant-date fair value (in dollars per share) | $ 0 |  |
Vested, weighted-average grant-date fair value (in dollars per share) | $ 0 |  |
Expired or forfeited, weighted-average grant-date fair value (in dollars per share) | $ 12.16 |  |
Non-vested weighted-average grant-date fair value, end of period (in dollars per share) | $ 11.29 | $ 11.35 |
Director Fee Plan [Member] |  |  |
Share-based compensation, aggregate disclosures [Abstract] |  |  |
Shares reserved for future issuance under award plan (in shares) | 300,000 |  |
Director Fee Plan, aggregate disclosures [Abstract] |  |  |
Annual retainer fee paid to non-employee directors | 60,000 |  |
Annual retainer fee paid to non-employee Chairman of the Board | 130,000 |  |
Shares deferred under the Director Fee Plan (in shares) | 17,005 |  |
Value of annual stock-based grant | $ 100,000 |  |
Total stock options granted to date (in shares) | 22,300 |  |
Option awards outstanding and vested (in shares) | 11,800 |  |
Total restricted stock awards granted to date (in shares) | 103,150 |  |
Restricted stock awards unvested (in shares) | 38,227 |  |

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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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