Fair Value Measurements - Financial Assets and Financial Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale, at estimated fair value	$ 153,239	$ 150,960
Equity investments	13,830	10,136
Interest rate swap liability	56,300	10,700
Other real estate owned	248	264
Items measured on a recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale, at estimated fair value	153,239	150,960
Equity investments	13,830	10,136
Interest rate swap asset	56,087	10,141
Interest rate swap liability	(56,306)	(10,708)
Items measured on a recurring basis | Level 1 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale, at estimated fair value	0	0
Equity investments	13,830	10,136
Interest rate swap asset	0	0
Interest rate swap liability	0	0
Items measured on a recurring basis | Level 2 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale, at estimated fair value	150,837	150,935
Equity investments	0	0
Interest rate swap asset	56,087	10,141
Interest rate swap liability	(56,306)	(10,708)
Items measured on a recurring basis | Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available-for-sale, at estimated fair value	2,402	25
Equity investments	0	0
Interest rate swap asset	0	0
Interest rate swap liability	0	0
Items measured on a nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	248	264
Items measured on a nonrecurring basis | Loans measured for impairment based on the fair value of the underlying collateral
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	30,372	8,794
Items measured on a nonrecurring basis | Level 1 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0	0
Items measured on a nonrecurring basis | Level 1 Inputs | Loans measured for impairment based on the fair value of the underlying collateral
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Items measured on a nonrecurring basis | Level 2 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0	0
Items measured on a nonrecurring basis | Level 2 Inputs | Loans measured for impairment based on the fair value of the underlying collateral
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Items measured on a nonrecurring basis | Level 3 Inputs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	248	264
Items measured on a nonrecurring basis | Level 3 Inputs | Loans measured for impairment based on the fair value of the underlying collateral
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 30,372	$ 8,794