Fair Value Measurements, Available-For-Sale Securities And Restricted Funds (Schedule Of Contractual Maturities Of Debt Securities Excluding Debt-Based Mutual Fund Holdings) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Fair Value Measurements, Available-For-Sale Securities And Restricted Funds [Abstract]
Amortized Cost, Within 1 year	$ 309
Amortized Cost, After 1 year and through year 5	9,437
Amortized Cost, After 5 years and through year 10	8,876
Amortized Cost, After 10 years	12,419
Estimated Fair Value, Within 1 year	325
Estimated Fair Value, After 1 year and through year 5	9,710
Estimated Fair Value, After 5 years and through year 10	9,312
Estimated Fair Value, After 10 years	$ 12,964

Fair Value Measurements, Available-For-Sale Securities And Restricted Funds (Schedule Of Contractual Maturities Of Debt Securities Excluding Debt-Based Mutual Fund Holdings) (Details) (USD $)
In Thousands, unless otherwise specified

Sep. 30, 2012

Fair Value Measurements, Available-For-Sale Securities And Restricted Funds [Abstract]

$ 309

Amortized Cost, After 1 year and through year 5

9,437

Amortized Cost, After 5 years and through year 10

8,876

Amortized Cost, After 10 years

12,419

Estimated Fair Value, Within 1 year

325

Estimated Fair Value, After 1 year and through year 5

9,710

Estimated Fair Value, After 5 years and through year 10

9,312

Estimated Fair Value, After 10 years

$ 12,964

- Definition

Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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- Definition

Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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- Definition

Amount of available-for-sale debt securities at cost, net of adjustments, maturing after the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

+ References+ Details

- Definition

Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the next fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.

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