Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	$ 1,429,518	$ 1,344,790
Unrealized Gains	9,546	30,126
Unrealized Losses	(79,581)	(10,182)
Fair Value	1,359,483	1,364,734
US Government Agencies Debt Securities [Member]
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	116,581	118,176
Unrealized Gains	343	2,688
Unrealized Losses	(4,522)	(741)
Fair Value	112,402	120,123
Mortgage Backed Securities - Residential
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	668,331	628,920
Unrealized Gains	398	4,387
Unrealized Losses	(45,062)	(6,879)
Fair Value	623,667	626,428
Mortgage Backed Securities - Commercial
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	11,490	15,480
Unrealized Gains	8	191
Unrealized Losses	(54)	0
Fair Value	11,444	15,671
Collateralized Mortgage Obligations
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	211,507	175,501
Unrealized Gains	24	1,272
Unrealized Losses	(9,555)	(1,768)
Fair Value	201,976	175,005
State and Municipal Obligations
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	377,351	362,843
Unrealized Gains	5,208	17,833
Unrealized Losses	(17,604)	(578)
Fair Value	364,955	380,098
Taxable Municipal Bonds
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	38,440	38,445
Unrealized Gains	34	396
Unrealized Losses	(2,777)	(215)
Fair Value	35,697	38,626
US Treasury Securities
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	2,083	205
Unrealized Gains	0	0
Unrealized Losses	(7)	(1)
Fair Value	2,076	204
Collateralized Debt Obligations
Amortized cost and fair value of investments classified as available for sale
Amortized Cost	0	0
Unrealized Gains	3,531	3,359
Unrealized Losses	0	0
Fair Value	$ 3,531	$ 3,359

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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