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Financial Instruments and Fair Value Measurements (Tables)
 9 Months Ended
Jun. 30, 2019
Financial Instruments and Fair Value Measurments  
Financial Assets that are Measured at Fair Value on a Recurring Basis

At June 30, 2019

At September 30, 2018

Level 1

Level 2

Level 3

Total

Level 1

Level 2

Level 3

Total

Financial assets:

Cash

$

54,392 

$

-

$

-

$

54,392 

$

59,838 

$

-

$

-

$

59,838 

Investments in reverse repurchase agreements

90 

-

-

90 

4,582 

-

-

4,582 

Investments in term deposits with foreign banks

8,820 

-

-

8,820 

19,174 

-

-

19,174 

Equity securities

20,787 

-

-

20,787 

19,730 

-

-

19,730 

Cross currency interest rate swaps

-

2,186 

-

2,186 

-

-

-

-

Total financial assets

$

84,089 

$

2,186 

$

-

$

86,275 

$

103,324 

$

-

$

-

$

103,324 

Financial liabilities:

Cross currency interest rate swaps

$

-

$

4,319 

$

-

$

4,319 

$

-

$

23,000 

$

-

$

23,000 

Total financial liabilities

$

-

$

4,319 

$

-

$

4,319 

$

-

$

23,000 

$

-

$

23,000 
Estimated Fair Values of Financial Instruments

At June 30, 2019

At September 30, 2018

Fair Value Hierarchy Level

Estimated Fair Value

Carrying Cost

Estimated Fair Value

Carrying Cost

Assets:

Notes receivable from municipalities

2

$

14,037

$

13,382

$

13,458

$

13,462

Investments in short-term time deposits

2

12,072

12,123

8,883

8,874

Liabilities:

Long-term debt

2

$

(1,065,531)

$

(1,013,737)

$

(1,094,987)

$

(1,095,292)