Investment Securities - Schedule of Amortized Cost and Fair Value by Contractual Maturity of Available-For-Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Amortized Cost
Amortized Cost	$ 274,524	$ 273,126
Fair Value
Total	274,441	271,610
U.S. Treasury and government sponsored entities
Amortized Cost
Within 1 year	75,030
1-5 years	137,472
Amortized Cost	212,502	209,908
Fair Value
Within 1 year	74,731
1-5 years	137,566
Total	$ 212,297	208,860
Weighted Average Yield
Within 1 year	1.48%
1-5 years	2.41%
Total	2.08%
Corporate bonds
Amortized Cost
Within 1 year	$ 12,449
1-5 years	20,678
5-10 years	7,010
Amortized Cost	40,137	40,139
Fair Value
Within 1 year	12,520
1-5 years	20,842
5-10 years	6,975
Total	$ 40,337	39,780
Weighted Average Yield
Within 1 year	3.64%
1-5 years	3.72%
5-10 years	3.74%
Total	3.70%
Collateralized loan obligations
Amortized Cost
5-10 years	$ 3,000
Over 10 years	14,979
Amortized Cost	17,979	13,990
Fair Value
5-10 years	2,999
Over 10 years	14,910
Total	$ 17,909	13,886
Weighted Average Yield
5-10 years	4.28%
Over 10 years	4.01%
Total	4.06%
Municipal securities
Amortized Cost
Within 1 year	$ 1,913
1-5 years	1,993
Amortized Cost	3,906	9,089
Fair Value
Within 1 year	1,914
1-5 years	1,984
Total	$ 3,898	$ 9,084
Weighted Average Yield
Within 1 year	1.81%
1-5 years	4.31%
Total	3.08%