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B. SUMMARY OF CRITICAL ACCOUNTING POLICIES (Details 2)
12 Months Ended
Dec. 31, 2018
USD ($)
Amortized cost $ 491,920
Accrued interest 2,197
Gross unrealized gains 626
Gross unrealized losses (110)
Estimated fair value 494,633
Corporate debt securities  
Amortized cost 118,719
Accrued interest 379
Gross unrealized gains 333
Gross unrealized losses 0
Estimated fair value 119,431
Obligations of U.S. Government and its agencies  
Amortized cost 373,201
Accrued interest 1,818
Gross unrealized gains 293
Gross unrealized losses (110)
Estimated fair value $ 375,202