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Other Comprehensive Income (Tables)
 6 Months Ended
Mar. 31, 2020
Equity [Abstract]  
Summary of Other Comprehensive Income and Loss
A summary of other comprehensive income and loss is provided below:
 
 
Before-Tax
Amount
 
Tax
(Expense)
or Benefit
 
Net-of-Tax
Amount
Three Months Ended March 31, 2020
 
 
 
 
 
Interest rate swaps:
 
 
 
 
 
Unrealized losses
$
(1,654,962
)
 
$
425,987

 
$
(1,228,975
)
Transfer of realized losses to interest expense
16,698

 
(4,297
)
 
12,401

Net interest rate swaps
(1,638,264
)
 
421,690

 
(1,216,574
)
Defined benefit plans:
 
 
 
 
 
Amortization of actuarial losses
22,610

 
(5,819
)
 
16,791

Other comprehensive loss
$
(1,615,654
)
 
$
415,871

 
$
(1,199,783
)
Three Months Ended March 31, 2019
 
 
 
 
 
Interest rate swap:
 
 
 
 
 
Unrealized losses
$
(40,059
)
 
$
10,311

 
$
(29,748
)
Transfer of realized gains to interest expense
(19,355
)
 
4,982

 
(14,373
)
Net interest rate swap
(59,414
)
 
15,293

 
(44,121
)
Defined benefit plans:
 
 
 
 
 
Amortization of actuarial gains
(2,576
)
 
663

 
(1,913
)
Other comprehensive loss
$
(61,990
)
 
$
15,956

 
$
(46,034
)
 
 
 
 
 
 
 
Before-Tax
Amount
 
Tax
(Expense)
or Benefit
 
Net-of-Tax
Amount
Six Months Ended March 31, 2020
 
 
 
 
 
Interest rate swaps:
 
 
 
 
 
Unrealized losses
$
(1,304,269
)
 
$
335,718

 
$
(968,551
)
Transfer of realized losses to interest expense
20,238

 
(5,208
)
 
15,030

Net interest rate swaps
(1,284,031
)
 
330,510

 
(953,521
)
Defined benefit plans:
 
 
 
 
 
Amortization of actuarial losses
45,220

 
(11,638
)
 
33,582

Other comprehensive loss
$
(1,238,811
)
 
$
318,872

 
$
(919,939
)
Six Months Ended March 31, 2019
 
 
 
 
 
Interest rate swap:
 
 
 
 
 
Unrealized losses
$
(134,015
)
 
$
34,495

 
$
(99,520
)
Transfer of realized gains to interest expense
(35,017
)
 
9,013

 
(26,004
)
Net interest rate swap
(169,032
)
 
43,508

 
(125,524
)
Defined benefit plans:
 
 
 
 
 
Amortization of actuarial gains
(5,152
)
 
1,326

 
(3,826
)
Other comprehensive loss
$
(174,184
)
 
$
44,834

 
$
(129,350
)
Reconciliation of Other Accumulated Other Comprehensive Income (Loss)
Reconciliation of Accumulated Other Comprehensive Income (Loss)
 
 
Accumulated
Other
Comprehensive
Income (Loss)
Balance at September 30, 2019
$
(2,488,917
)
Other comprehensive loss
(919,939
)
Balance at March 31, 2020
$
(3,408,856
)