Fair Value - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Available for sale securities:
Securities available-for-sale, carried at fair value	$ 1,219,365	$ 1,206,260
Collateralized mortgage obligations [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	305,529	260,168
Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	1,219,365	1,206,260
Fair Value, Inputs, Level 2 [Member] | Collateralized mortgage obligations [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	305,529	260,168
Obligations of U.S. government corporations and agencies [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	161,433	174,710
Obligations of U.S. government corporations and agencies [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	161,433	174,710
Mortgage-Backed Securities [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	200,824	206,751
Mortgage-Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	200,824	206,751
Asset-backed Securities [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	213,097	220,536
Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	213,097	220,536
Corporate bonds [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	72,719	70,893
Corporate bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	72,719	70,893
Obligations of state and political subdivisions [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	265,764	273,202
Obligations of state and political subdivisions [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	265,764	273,202
Equity Securities [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	13,454	14,097
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	13,454	14,097
Loans Held for Sale, at Fair Value [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	153,498	162,947
Loans Held for Sale, at Fair Value [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	37,014	28,780
Loans Held for Sale, at Fair Value [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	116,484	134,167
Interest Rate Swap Assets [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	2,338	1,287
Interest Rate Swap Assets [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	2,338	1,287
Mortgage banking derivative [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	9,923	2,336
Mortgage banking derivative [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	9,923	2,336
Interest Rate Swap Liability [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	2,338
Interest Rate Swap Liability [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	2,338	1,292
Cash Flow Hedge Derivative Liability [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	16,180	$ 1,292
Cash Flow Hedge Derivative Liability [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Securities available-for-sale, carried at fair value	$ 16,180