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LONG-TERM DEBT (Tables)
12 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]  
Schedule of Maturities of Long-term Debt [Table Text Block]
The following are contractual maturities of long-term debt by year at December 31, 2017:
 
 
 
Principal
 
Interest
 
Year ending December 31,
 
 
 
 
 
 
 
2018
 
$
2,459,000
 
$
301,000
 
2019
 
 
1,988,000
 
 
163,000
 
2020
 
 
1,146,000
 
 
61,000
 
2021
 
 
464,000
 
 
13,000
 
 
 
 
 
 
 
 
 
 
 
$
6,057,000
 
$
538,000