3. Investments (Details 4) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Amortized cost	$ 3,826,404	$ 3,825,952
Estimated fair value	4,136,710	4,124,767
Less Than One Year
Amortized cost	500,000	500,000
Estimated fair value	497,770	499,165
One To Five Years
Amortized cost	2,099,588	2,099,268
Estimated fair value	2,220,096	2,215,640
Five To Ten Years
Amortized cost	620,255	620,134
Estimated fair value	664,805	655,923
More Than 10 Years
Amortized cost	606,561	606,550
Estimated fair value	$ 754,039	$ 754,039