Shareholders' Equity (Details) - USD ($)	1 Months Ended			3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2018
Stock Repurchase Program [Abstract]
Stock repurchase program, additional amount authorized			$ 1,500,000
Stock repurchase program authorized amount							$ 20,000,000
Stock repurchased during period (in shares)					19,640
Amount paid to repurchase shares during the year					$ 537,379	$ 3,313,154
Amount of common stock repurchased	$ 18,623,628				$ 18,623,628
Number of common stock acquired (in shares)	1,301,905				1,301,905
Earnings Per Share [Abstract]
Basic weighted average shares outstanding (in shares)					3,171,919	3,233,773
Weighted average dilutive options outstanding (in shares)					0	0
Diluted weighted average shares outstanding (in shares)					3,171,919	3,233,773
Statutory Restrictions [Abstract]
Minimum statutory surplus required to maintain	$ 2,500,000				$ 2,500,000
Period from declaration of ordinary dividend requires notification to insurance commissioner					5 days
Minimum period prior to payment of dividend requires notification to insurance commissioner					10 days
Percentage of statutory capital and surplus	10.00%				10.00%
Ordinary dividends paid					$ 5,000,000	$ 4,000,000
Period for which no extraordinary dividends paid					2 years
Outside Directors [Member]
Share-based Compensation [Abstract]
Annual retainer fee paid to director					$ 5,000
Per meeting fee paid to director					$ 2,500
Number of shares issued (in shares)	4,269	3,977
Stock issued during period (in dollars per share)	$ 27.50	$ 27.00			$ 27.50	$ 27.00
Cost of shares issued					$ 117,398	$ 107,379
Management and Employees [Member]
Share-based Compensation [Abstract]
Number of shares issued (in shares)					6,294	6,664
Cost of shares issued					$ 170,537	$ 218,289
Cumberland Lake Shell, Inc [Member]
Stock Repurchase Program [Abstract]
Stock repurchased during period (in shares)				88,341
Amount paid to repurchase shares during the year				$ 2,561,889
Stock purchase price (in dollars per share)				$ 29