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INVESTMENTS (Tables)
 12 Months Ended
Dec. 31, 2016
Investments [Abstract]  
Held-to-maturity Securities [Table Text Block]

Below is a summary of the amortized cost and estimated market values of the Company’s marketable securities as of December 31, 2016, and 2015. The estimated market values provided are Level 2 valuations as defined by ASC 820.
 
 
 
2016
 
2015
  
 
Amortized
Cost
 
Market
Value
 
Amortized
Cost
 
Market
Value
  
 
(Dollars in thousands)
Municipal bonds:
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
Current
 
$
4,601
 
 
$
4,610
 
 
$
4,522
 
 
$
4,546
 
Due from one through five years
 
 
12,133
 
 
 
12,486
 
 
 
12,395
 
 
 
13,057
 
Due from six through ten years
 
 
7,705
 
 
 
7,804
 
 
 
6,929
 
 
 
7,217
 
Due from eleven through twenty years
 
 
1,223
 
 
 
1,222
 
 
 
1,361
 
 
 
1,391
 
Total
 
$
25,662
 
 
$
26,122
 
 
$
25,207
 
 
$
26,211
 
Unrealized Gain (Loss) on Investments [Table Text Block]
The unrealized gains and losses on marketable securities at December 31, 2016 and 2015 were as follows:
 
 
 
2016
 
2015
  
 
Unrealized
Gains
 
Unrealized
Losses
 
Unrealized
Gains
 
Unrealized
Losses
  
 
(Dollars in thousands)
Municipal bonds
 
$
546
 
 
$
(86
) 
 
$
1,014
 
 
$
(10
)