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Investments (Unrealized Gain (Loss) On Investments) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 535,101	$ 525,717
Gross unrealized gains	1,008	8,760
Gross unrealized losses	(24,632)	(4,666)
Fair value	511,477	529,811
U.S Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	84,725	84,896
Gross unrealized gains		88
Gross unrealized losses	(5,713)	(698)
Fair value	79,012	84,286
Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	205,912	206,501
Gross unrealized gains	811	7,148
Gross unrealized losses	(10,920)	(1,422)
Fair value	195,803	212,227
Corporate [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	25,300	24,794
Gross unrealized gains	69	333
Gross unrealized losses	(639)	(188)
Fair value	24,730	24,939
Agency Mortgage-Backed & asset-backed [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	174,496	178,614
Gross unrealized gains	117	1,157
Gross unrealized losses	(6,208)	(2,086)
Fair value	168,405	177,685
Non-Agency mortgage & asset-backed [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	44,668	30,912
Gross unrealized gains	11	34
Gross unrealized losses	(1,152)	(272)
Fair value	$ 43,527	$ 30,674

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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