Investments (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) item	Dec. 31, 2016 USD ($) item
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses for 12 consecutive months or longer	$ 264,751	$ 50,450
OTTI losses recognized in net earnings	$ 57,316
Apartment rental units | item	54
Property held for investment, accumulated depreciation	$ 127,161	50,948
Depreciation expense	76,213	47,793
Residential Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value	13,517,725	10,288,405
Commercial Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value	$ 8,469,852	$ 7,600,109
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities in an unrealized loss position | item	13	21
Number of securities in an unrealized loss position for 12 consecutive months or longer | item	5	2
Unrealized losses for 12 consecutive months or longer	$ 19,711	$ 33,929
AFS, Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of securities in an unrealized loss position | item	64
Number of securities in an unrealized loss position for 12 consecutive months or longer | item	29
Unrealized losses for 12 consecutive months or longer	$ 245,040
Securities on deposit with regulatory authorities or banks	3,962,291	2,958,297
Securities pledged	923,766	1,808,523
Common Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses for 12 consecutive months or longer		33,929
OTTI losses recognized in net earnings		205,834
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized losses for 12 consecutive months or longer	$ 245,040	16,521
OTTI losses recognized in net earnings		$ 6,897