TDR's that have subsequent default (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) contract	Dec. 31, 2017 USD ($) contract	Dec. 31, 2016 USD ($) contract
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 0	$ 122,000	$ 249,000
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	0	1	1
Commercial And Industrial [Member]
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 0		$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	0	1	0
Commercial Real Estate [Member]
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 0	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	0	0	1
Residential Real Estate [Member]
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 0	$ 0	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	0	0	0
Home Equity Line of Credit [Member]
TROUBLED DEBT RESTRUCTURINGS THAT SUBSEQUENTLY DEFAULTED:
Recorded Investment | $	$ 0	$ 0	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | contract	0	0	0