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SHAREHOLDERS' EQUITY (Tables)
 12 Months Ended
Dec. 31, 2017
Stockholders' Equity Note [Abstract]  
Schedule of Stock by Class [Table Text Block]
The Company's common stock has a par value of $0.01 per share. The common stock outstanding activity for each of the years ended December 31, 2017, 2016, and 2015 was as follows (in shares):
 
Common Stock
 
2017
 
2016
 
2015
Balance at beginning of year
12,893,794

 
12,838,227

 
12,821,768

Shares distributed/exercised
80,908

 
101,759

 
36,464

Shares purchased
(4,688
)
 
(45,776
)
 
(18,605
)
Shares forfeited
(6,850
)
 
(416
)
 
(1,400
)
Balance at end of year
12,963,164

 
12,893,794

 
12,838,227