Securities - Schedule of Amortized Cost and Fair Value by Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Available for Sale Amortized Cost
1 year or less	$ 9,613
Over 1 year through 5 years	116,518
Over 5 years through 10 years	199
Over 10 years	0
Total amortized cost	174,490	$ 163,862
Available for Sale Fair Value
1 year or less	9,603
Over 1 year through 5 years	116,866
Over 5 years through 10 years	201
Over 10 years	0
Total securities available for sale	175,712	161,730
Held-to-Maturity Amortized Cost
1 year or less	5,000
Over 1 year through 5 years	2,000
Over 5 years through 10 years	0
Over 10 years	0
Total amortized costs	24,722	27,266	$ 39,894
Held-to-Maturity Fair Value
1 year or less	4,988
Over 1 year through 5 years	2,006
Over 5 years through 10 years	0
Over 10 years	0
Securities held to maturity, fair value	24,772	26,911	$ 39,145
Mortgage-backed securities, residential
Available for Sale Amortized Cost
Without single maturity date	48,160
Total amortized cost	48,160	33,960
Available for Sale Fair Value
Without single maturity date	49,042
Total securities available for sale	49,042	33,811
Held-to-Maturity Amortized Cost
Without single maturity date	17,722
Total amortized costs	17,722	20,266
Held-to-Maturity Fair Value
Without single maturity date	17,778
Securities held to maturity, fair value	$ 17,778	$ 19,980