Investment Securities (Held-to-maturity Securities with Unrealized Loss) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value			$ 9,397
Less than 12 months, unrealized loss			$ 68
Less than 12 months, no. of securities | securities			2
12 months or more, fair value			$ 890
12 months or more, unrealized loss			$ 27
12 months or more, no. of securities | securities			1
Total fair value			$ 10,287
Total unrealized loss	$ 0		95
Gross losses realized	0	$ 0
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value			7,731
Less than 12 months, unrealized loss			$ 67
Less than 12 months, no. of securities | securities			1
12 months or more, fair value			$ 890
12 months or more, unrealized loss			$ 27
12 months or more, no. of securities | securities			1
Total fair value			$ 8,621
Total unrealized loss	0		94
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value			1,666
Less than 12 months, unrealized loss			$ 1
Less than 12 months, no. of securities | securities			1
12 months or more, fair value			$ 0
12 months or more, unrealized loss			$ 0
12 months or more, no. of securities | securities			0
Total fair value			$ 1,666
Total unrealized loss	$ 0		$ 1