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Investments Unrealized Losses Less Than and Greater Than 12 Months (Details) $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 945,462	$ 110,267
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 168,710	$ 2,423
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	1,236	115
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 78,772	$ 8,832
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 36,552	$ 611
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	117	7
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 1,024,234	$ 119,099
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 205,262	$ 3,034
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	1,353	122
Debt security maturities rated investment grade, percent	98.70%	98.00%
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 0	$ 72
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 0	$ 1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	0	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 64	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 9	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	2	0
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 64	$ 72
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 9	$ 1
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	2	2
US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 223
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	0
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 223
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	1
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 189,084	$ 21,715
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 30,866	$ 692
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	242	15
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 14,184	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 7,098	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	14	0
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 203,268	$ 21,715
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 37,964	$ 692
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	256	15
Corporate Debt Security Financial Sector
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 182,447	$ 8,059
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 39,122	$ 86
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	237	15
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 6,144	$ 1,227
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 3,261	$ 86
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	16	1
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 188,591	$ 9,286
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 42,383	$ 172
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	253	16
Corporate Debt Security Consumer Sector
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 164,224	$ 29,494
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 34,823	$ 777
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	220	28
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 23,417	$ 2,419
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 12,315	$ 123
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	30	1
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 187,641	$ 31,913
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 47,138	$ 900
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	250	29
Corporate Debt Security Utilities Sector
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 73,483	$ 19,072
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 15,959	$ 401
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	152	14
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 16,413	$ 4,523
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 7,831	$ 400
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	18	4
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 89,896	$ 23,595
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 23,790	$ 801
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	170	18
Corporate Debt Security Energy Sector
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 59,053	$ 7,381
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 9,601	$ 68
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	75	8
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 5,617	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 1,794	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	8	0
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 64,670	$ 7,381
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 11,395	$ 68
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	83	8
Corporate Debt Security All Other Sector
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 140,955	$ 14,312
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 25,337	$ 380
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	171	16
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 7,910	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 3,711	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	15	0
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 148,865	$ 14,312
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 29,048	$ 380
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	186	16
Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 168
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	0
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 168
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 2
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	2
Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 98,758	$ 1,084
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 10,514	$ 6
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	95	6
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 759	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 251	$ 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	5	0
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 99,517	$ 1,084
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 10,765	$ 6
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	100	6
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 37,067	$ 9,078
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	$ 2,485	$ 12
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions	41	11
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	$ 4,264	$ 663
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 282	$ 2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	9	1
Debt Securities, Available-for-sale, Unrealized Loss Position	$ 41,331	$ 9,741
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 2,767	$ 14
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	50	12

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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