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Accumulated Other Comprehensive Income (Tables)
 3 Months Ended
Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
The following table presents changes in Accumulated Other Comprehensive Income (Loss), net of tax, for the three months ended March 31, 2020 and 2019:

2019:
Hedging Derivative Activities
Post Retirement Benefit Plan Items(A)
Accumulated Other Comprehensive Income (Loss)
Balance at December 31, 2018
$
(612,000
)
$
2,729,000

$
2,117,000

Other comprehensive income before reclassifications
449,000

—

449,000

Amounts reclassified from accumulated other comprehensive income (loss)
(179,000
)
(95,000
)
(274,000
)
Income tax benefit (expense)
(76,000
)
20,000

(56,000
)
Balance at March 31, 2019
$
(418,000
)
$
2,654,000

$
2,236,000

 
 
 
 
2020:
 
 
 
Balance at December 31, 2019
$
(191,000
)
$
1,561,000

$
1,370,000

Other comprehensive income (loss) before reclassifications
(2,578,000
)
—

(2,578,000
)
Amounts reclassified from accumulated other comprehensive income (loss)
121,000

(79,000
)
42,000

Income tax benefit
538,000

17,000

555,000

Balance at March 31, 2020
$
(2,110,000
)
$
1,499,000

$
(611,000
)