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Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Credit Loss Allowance Activity
Premium Receivable, Allowance for Credit Loss	$ 57	$ 126	$ 140	$ 165
Reinsurance Recoverable, Allowance for Credit Loss	511	241	386	256
Financing Receivable, Allowance for Credit Loss	167	112	20	141
Total Credit Loss Allowances	735	479	$ 546	$ 562
Premium Receivable, Credit Loss Expense (Reversal)	(118)	(39)
Reinsurance Recoverable, Credit Loss Expense (Reversal)	125	(15)
Financing Receivable, Credit Loss, Expense (Reversal)	147	(29)
Total Credit Loss Allowance Expenses	154	(83)
Premium Receivable, Allowance for Credit Loss, Writeoff	35	0
Reinsurance recoverable, allowance for credit loss, writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Total Credit Loss Allowance Writeoffs	$ 35	$ 0

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