Investment Securities - Unrealized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Net (Loss) Gain on Equity Securities	$ (374)	$ 76
Less: Net gain (loss) recognized during the reporting period on equity securities sold during the period	0	0
Unrealized net (loss) gain recognized during the reporting period on equity securities still held at the reporting date	$ (374)	$ 76