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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
12 Months Ended
Dec. 31, 2016
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]  
Schedule of Maturities
The schedule of maturities at December 31, 2016 and 2015 are as follows:
 
  
Maturities as of
December 31, 2016
  
Maturities as of
December 31, 2015
 
  
1 Year or
Less
  
Greater than 1
Year
  
1 Year or
Less
  
Greater than 1
Year
 
Municipal bonds
 
$
6,967,954
  
$
586,074
  
$
6,461,216
  
$
155,826
 
Corporate Bonds
  
30,418,120
   
2,936,287
   
9,882,285
   
1,597,715
 
Certificates of deposit
  
6,868,788
   
249,019
   
12,004,041
   
1,843,000
 
Total
 
$
44,254,862
  
$
3,771,380
  
$
28,347,542
  
$
3,596,541
 
Net Patent Costs
For each period presented below net patent costs consisted of:

    
December 31,
 
2016
  
2015
 
Patents
 
$
720,601
  
$
697,260
 
Accumulated Amortization
  
(462,246
)
  
(422,054
)
Net Patent Costs
 
$
258,355
  
$
275,206
 
Estimated Aggregate Future Amortization Expense
The estimated aggregate amortization expense for each of the next five years is approximately as follows:

2017
 
$
39,000
 
2018
  
39,000
 
2019
  
39,000
 
2020
  
27,000
 
2021
  
16,000