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Employee Benefits	12 Months Ended
Employee Benefits	Dec. 31, 2017
Retirement Benefits [Abstract]
Employee Benefits	Employee Benefits The Corporation maintains a Defined Contribution 401(k) Profit Sharing Plan (the “401(k) Plan”), which authorizes a maximum voluntary salary deferral of up to IRS limitations. All full-time employees are eligible to participate after 6 months of employment. The Corporation reserves the right to make an annual discretionary contribution to the account of each eligible employee based in part on the Corporation’s profitability for a given year, and on each participant’s yearly earnings. Approximately $1.1 million, $759 thousand, and $638 thousand were charged to expense under the 401(k) Plan for 2017, 2016, and 2015, respectively.