Balance Sheet Offsetting - Financial Instruments Derivative Assets Liabilities and Resell Agreements Net of Amount Not Offset (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Net Amount Recognized, Derivatives, Financial Assets	$ 23,339	$ 11,111
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets	(23,339)	(11,111)
Gross Amounts Not Offset, Collateral, Derivatives, Financial Assets	0	0
Net Amount, Derivatives, Financial Assets	0	0
Net Amount Recognized, Resell Agreements, Financial Assets	7,903	0
Gross Amounts Not Offset, Financial Instruments, Resell Agreements, Financial Assets	0	0
Gross Amounts Not Offset, Collateral, Resell Agreements, Financial Assets	(7,903)	0
Net Amount, Resell Agreements, Financial Assets	0	0
Net Amount Recognized, Total Financial Assets	31,242	11,111
Gross Amounts Not Offset, Collateral, Financial Assets	(7,903)	0
Net Amount, Financial Assets	0	0
Net Amount Recognized, Derivatives, Financial Liabilities	114,019	69,323
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Liabilities	(23,339)	(11,111)
Gross Amounts Not offset, Collateral, Derivatives, Financial Liabilities	(90,573)	(57,031)
Net Amount, Derivatives, Financial Liabilities	107	1,181
Net Amount Recognized, Repurchase Agreements, Financial Liabilities	2,740,799	2,068,147
Gross Amounts Not Offset, Financial Instruments, Repurchase Agreements, Financial Liabilities	0	0
Gross Amounts Not Offset, Collateral, Repurchase Agreements, Financial Liabilities	(2,740,799)	(2,068,147)
Net Amount, Repurchase Agreements, Financial Liabilities	0	0
Net Amount Recognized, Financial Liabilities	2,854,818	2,137,470
Gross Amounts Not Offset, Collateral, Financial Liabilities	(2,831,372)	(2,125,178)
Net Amount, Financial Liabilities	107	1,181
Counterparty A [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Net Amount Recognized, Derivatives, Financial Assets	6	2
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets	(6)	(2)
Gross Amounts Not Offset, Collateral, Derivatives, Financial Assets	0	0
Net Amount, Derivatives, Financial Assets	0	0
Net Amount Recognized, Derivatives, Financial Liabilities	3,870	6,430
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Liabilities	(6)	(2)
Gross Amounts Not offset, Collateral, Derivatives, Financial Liabilities	(3,864)	(6,428)
Net Amount, Derivatives, Financial Liabilities	0	0
Counterparty B [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Net Amount Recognized, Derivatives, Financial Assets	7,655	5,838
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets	(7,655)	(5,838)
Gross Amounts Not Offset, Collateral, Derivatives, Financial Assets	0	0
Net Amount, Derivatives, Financial Assets	0	0
Net Amount Recognized, Derivatives, Financial Liabilities	28,130	20,722
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Liabilities	(7,655)	(5,838)
Gross Amounts Not offset, Collateral, Derivatives, Financial Liabilities	(20,475)	(14,700)
Net Amount, Derivatives, Financial Liabilities	0	184
Counterparty C [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Net Amount Recognized, Derivatives, Financial Liabilities	9	71
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Liabilities	0	0
Gross Amounts Not offset, Collateral, Derivatives, Financial Liabilities	(9)	(71)
Net Amount, Derivatives, Financial Liabilities	0	0
Other Counterparties [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Net Amount Recognized, Derivatives, Financial Assets	15,678	5,271
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Assets	(15,678)	(5,271)
Gross Amounts Not Offset, Collateral, Derivatives, Financial Assets	0	0
Net Amount, Derivatives, Financial Assets	0	0
Net Amount Recognized, Derivatives, Financial Liabilities	82,010	42,100
Gross Amounts Not Offset, Financial Instruments, Total Derivatives, Financial Liabilities	(15,678)	(5,271)
Gross Amounts Not offset, Collateral, Derivatives, Financial Liabilities	(66,225)	(35,832)
Net Amount, Derivatives, Financial Liabilities	$ 107	$ 997