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LOW INCOME HOUSING PROJECT INVESTMENTS Low Income Housing Project Investments (Tables)
 12 Months Ended
Dec. 31, 2017
Low Income Housing Project Investments [Abstract]  
Investments in Low Income Housing Projects [Table Text Block]
The following table presents certain information related to the Company's investments in low income housing projects as of December 31:
 
2017
 
2016
 
2015
 
(Dollars in thousands)
Original investment value
$
47,399

 
$
47,379

 
$
42,199

Current recorded investment
$
35,225

 
$
39,606

 
$
38,151

Unfunded liability obligation
$
4,536

 
$
12,161

 
$
14,607

Tax credits and benefits earned during the year
$
5,654

 
$
5,366

 
$
3,632

Amortization of investments during the year (1)
$
4,402

 
$
3,725

 
$
2,450

Net income tax benefit recognized during the year
$
1,253

 
$
1,641

 
$
1,182

(1)
    The 2017 amount is inclusive of $466,000 related to the revaluation of Low Income Housing tax credit investments as a result of the 2017 Tax Act.