Investment Securities - Schedule of Amortized Cost and Fair Value by Contractual Maturity of Available-For-Sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Amortized Cost
Amortized Cost	$ 248,770	$ 273,126
Fair Value
Total	249,986	271,610
U.S. Treasury and government sponsored entities
Amortized Cost
Within 1 year	70,013
1-5 years	111,747
Amortized Cost	181,760	209,908
Fair Value
Within 1 year	69,995
1-5 years	112,771
Total	$ 182,766	208,860
Weighted Average Yield
Within 1 year	1.70%
1-5 years	2.33%
Total	2.09%
Corporate bonds
Amortized Cost
Within 1 year	$ 14,450
1-5 years	20,689
5-10 years	4,996
Amortized Cost	40,135	40,139
Fair Value
Within 1 year	14,505
1-5 years	20,887
5-10 years	5,008
Total	$ 40,400	39,780
Weighted Average Yield
Within 1 year	3.44%
1-5 years	3.54%
5-10 years	3.52%
Total	3.50%
Collateralized loan obligations
Amortized Cost
5-10 years	$ 3,000
Over 10 years	19,979
Amortized Cost	22,979	13,990
Fair Value
5-10 years	2,999
Over 10 years	19,932
Total	$ 22,931	13,886
Weighted Average Yield
5-10 years	4.06%
Over 10 years	4.01%
Total	4.02%
Municipal securities
Amortized Cost
Within 1 year	$ 1,905
1-5 years	1,991
Amortized Cost	3,896	9,089
Fair Value
Within 1 year	1,909
1-5 years	1,980
Total	$ 3,889	$ 9,084
Weighted Average Yield
Within 1 year	1.80%
1-5 years	4.30%
Total	3.08%