Other Assets (Summary of Other Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Other assets:
Real estate owned	$ 8,216	$ 3,769
Derivative assets	3,873	5,797
Accrued interest receivable	1,888	854
Other assets	377	520
Total other assets	$ 14,354	$ 10,940