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Low-Income Housing Tax Credits (Tables)
3 Months Ended
Mar. 31, 2019
Low-Income Housing Tax Credits [Abstract]  
Tax Credits and Other Tax Benefits Recognized Related to Investments
  
Three Months Ended March 31,
 
Affected Line Item on
  
2019
  
2018
 
Consolidated Statement of Income
  
(in thousands)
  
Tax credits and other tax benefits
         
Amortization of operating losses
 
$
80
  
$
80
 
ATM and other losses
             
Tax benefit of operating losses*
 
$
17
  
$
17
 
Income tax expense (benefit)
             
Tax credits
  
124
   
124
 
Income tax expense (benefit)
             
Total tax benefits
 
$
141
  
$
141
  
             
* Computed using a 21% tax rate