Investment Securities - Schedule of Amortized Cost and Fair Value by Contractual Maturity of Available-For-Sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 273,126	$ 307,843
Fair Value	271,610	307,019
U.S. Treasury and government sponsored entities
Debt Securities, Available-for-sale [Line Items]
Within 1 year, amortized cost	68,285
1-5 years, amortized cost	141,623
Amortized Cost	209,908	250,794
Within 1 year, fair value	67,798
1-5 years, fair value	141,062
Fair Value	$ 208,860	249,461
Within one year, weighted average yield	1.41%
1-5 years, weighted average yield	2.36%
Weighted Average Yield	2.05%
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
1-5 years, amortized cost	$ 30,130
5-10 years, amortized cost	10,009
Amortized Cost	40,139	36,654
1-5 years, fair value	30,103
5-10 years, fair value	9,677
Fair Value	$ 39,780	37,132
1-5 years, weighted average yield	3.45%
5-10 years, weighted average yield	3.51%
Weighted Average Yield	3.46%
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
5-10 years, amortized cost	$ 3,000
Over 10 years, amortized cost	10,990
Amortized Cost	13,990	6,000
5-10 years, fair value	2,990
Over 10 years, fair value	10,896
Fair Value	$ 13,886	6,005
5-10 years, weighted average yield	3.86%
Over 10 years, weighted average yield	3.78%
Weighted Average Yield	3.80%
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Within 1 year, amortized cost	$ 1,867
1-5 years, amortized cost	7,222
Amortized Cost	9,089	14,395
Within 1 year, fair value	1,861
1-5 years, fair value	7,223
Fair Value	$ 9,084	$ 14,421
Within one year, weighted average yield	1.64%
1-5 years, weighted average yield	2.64%
Weighted Average Yield	2.43%

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Debt Securities, Available-For-Sale, After Five Through Ten Years, Weighted Average Yield

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth fiscal year through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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