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Fair Value of Financial Instruments - Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Total available-for-sale securities	$ 634,007	$ 497,628
Loans held-for-sale (mandatory pricing agreements)	19,181	26,341
Servicing asset	4,412	3,569
Derivative, fair value	(18,710)	(30,390)
Loans Held For Sale
Loans held-for-sale (mandatory pricing agreements)	19,181	26,341
Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
Servicing asset	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans Held For Sale
Loans held-for-sale (mandatory pricing agreements)	0	0
Significant Other Observable Inputs (Level 2)
Total available-for-sale securities	634,007	497,628
Servicing asset	0	0
Significant Other Observable Inputs (Level 2) | Loans Held For Sale
Loans held-for-sale (mandatory pricing agreements)	19,181	26,341
Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Servicing asset	4,412	3,569
Significant Unobservable Inputs (Level 3) | Loans Held For Sale
Loans held-for-sale (mandatory pricing agreements)	0	0
U.S. Government-sponsored agencies
Total available-for-sale securities	52,455	60,545
U.S. Government-sponsored agencies | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
U.S. Government-sponsored agencies | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities	52,455	60,545
U.S. Government-sponsored agencies | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Municipal securities
Total available-for-sale securities	77,450	82,489
Municipal securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
Municipal securities | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities	77,450	82,489
Municipal securities | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Agency mortgage-backed securities
Total available-for-sale securities	429,885	243,921
Agency mortgage-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
Agency mortgage-backed securities | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities		243,921
Agency mortgage-backed securities | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Private label mortgage-backed securities
Total available-for-sale securities	20,235	58,116
Private label mortgage-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities		0
Private label mortgage-backed securities | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Asset-backed securities
Total available-for-sale securities	5,005	4,961
Asset-backed securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
Asset-backed securities | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities	5,005	4,961
Asset-backed securities | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
Corporate securities
Total available-for-sale securities	48,977	47,596
Corporate securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Total available-for-sale securities	0	0
Corporate securities | Significant Other Observable Inputs (Level 2)
Total available-for-sale securities	48,977	47,596
Corporate securities | Significant Unobservable Inputs (Level 3)
Total available-for-sale securities	0	0
IRLCs
Derivative, fair value	840	3,361
IRLCs | Quoted Prices in Active Markets for Identical Assets (Level 1)
Derivative, fair value	0	0
IRLCs | Significant Other Observable Inputs (Level 2)
Derivative, fair value	0	0
IRLCs | Significant Unobservable Inputs (Level 3)
Derivative, fair value	840	3,361
Interest rate swaps | Interest rate swaps
Derivative liability, fair value	(18,710)	(29,750)
Interest rate swaps | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swaps
Derivative liability, fair value	0	0
Interest rate swaps | Significant Other Observable Inputs (Level 2) | Interest rate swaps
Derivative liability, fair value	(18,710)	(29,750)
Interest rate swaps | Significant Unobservable Inputs (Level 3) | Interest rate swaps
Derivative liability, fair value	0	0
Forward contracts | Forward contracts
Derivative, fair value	458	(640)
Forward contracts | Quoted Prices in Active Markets for Identical Assets (Level 1) | Forward contracts
Derivative, fair value	458	(640)
Forward contracts | Significant Other Observable Inputs (Level 2) | Forward contracts
Derivative, fair value	0	0
Forward contracts | Significant Unobservable Inputs (Level 3) | Forward contracts
Derivative, fair value	0	0
Derivatives designated as hedging instruments | Interest rate swaps
Derivative, fair value	$ (2,608)	$ (6,072)

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