Reinsurance and Policy Benefits and Losses, Claims and Loss Expenses Payable (Narratives) (Details) - USD ($)	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Reinsurance Disclosures [Abstract]
Maximum amount of life insurance retained on any one life	$ 150,000
Letters of credit held at year end from re-insurers		$ 100,000
Letters of credit issued at year end		1,500,000
Reinsurance recoverable, gross		64,900,000
Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease)		$ 31,200,000