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Fair Value of Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2020
Notes to Financial Statements  
Fair Value Financial Instruments
  June 30, 2020 December 31, 2019
  Carrying Fair Carrying Fair
  Amount Value Amount Value
         
Cash and equivalents $     50,583 $    50,583 $     191,987 $    191,987
Accounts receivable 90,806 90,806 125,539 125,539
Interest receivable 174,702 174,702 185,190 185,190
Mortgage loans receivable 19,436,426 23,748,139 22,425,177 24,573,176
Bond portfolio 17,619,937 17,619,937 16,055,937 16,055,937
Secured investor certificates 25,567,250 31,893,329 26,850,000 32,389,253