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Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Credit Loss Allowance Activity [Line Items]
Premium Receivable, Allowance for Credit Loss	$ 32	$ 140	$ 165
Charged to Costs and Expenses	(190)	(311)
Premium Receivable, Allowance for Credit Loss, Writeoff	82	286
Reinsurance Recoverable, Allowance for Credit Loss	563	386		$ 256
Reinsurance Recoverable, Credit Loss Expense (Reversal)	177	130
Reinsurance recoverable, allowance for credit loss, writeoff	0	0
Financing Receivable, Allowance for Credit Loss	0	20		141
Financing Receivable, Credit Loss, Expense (Reversal)	(20)	(121)
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Total Credit Loss Allowances	595	546		$ 562
Change in Credit Loss Allowance	(33)	(302)
Total Credit Loss Allowance Writeoffs	$ 82	$ 286

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