Commitments and Contingencies (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Total unfunded commitments	$ 323,270	$ 229,573
Revolving home equity and credit card lines [Member]
Loss Contingencies [Line Items]
Total unfunded commitments	69,893	69,187
Construction loans [Member]
Loss Contingencies [Line Items]
Total unfunded commitments	85,392	44,323
Other loans [Member]
Loss Contingencies [Line Items]
Total unfunded commitments	161,619	112,193
Standby letters of credit [Member]
Loss Contingencies [Line Items]
Total unfunded commitments	$ 6,366	$ 3,870