Securities - Schedule of Net Gains and Losses on Equity Investments Recognized in Earnings and Portion of Unrealized Gains and Losses for Period that Relates to Equity Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Investments Debt And Equity Securities [Abstract]
Net losses recognized on equity securities during the period	$ (5)	$ (33)	$ (146)	$ (31)
Less: Net losses realized on the sale of equity securities during the period			6
Unrealized losses recognized on equity securities held at reporting date	$ (5)	$ (33)	$ (140)	$ (31)