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Loans - TDR (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) contract	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) contract	Sep. 30, 2018 USD ($) contract	Dec. 31, 2018 USD ($)
Troubled debt restructurings - modified during the period
# of contracts		6		17
Pre-modification recorded investment	$ 1,159,000	$ 791,000	$ 1,694,000	$ 1,600,000
Post-modification recorded investment	1,122,000	$ 782,000	1,546,000	1,473,000
TDR's defaulted
Pre-modification outstanding recorded investment during the period			0	$ 0
Other information
Total Past Due	7,955,000		7,955,000		$ 13,358,000
Others [Member]
Troubled debt restructurings - modified during the period
# of contracts		1		1
Pre-modification recorded investment		$ 34,000		$ 34,000
Post-modification recorded investment		$ 29,000		$ 29,000
Home Affordable Modification Program [Member]
Troubled debt restructurings - modified during the period
# of contracts		1		1
Pre-modification recorded investment		$ 26,000		$ 26,000
Post-modification recorded investment		$ 26,000		$ 26,000
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Other information
Total Past Due	1,509,000		1,509,000		961,000
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied Special Purpose Loan [Member] | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract				1
Pre-modification recorded investment				$ 110,000
Post-modification recorded investment				$ 52,000
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Other information
Total Past Due	2,613,000		$ 2,613,000		1,801,000
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member] | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts		1	1	1
Pre-modification recorded investment		$ 427,000	$ 58,000	$ 427,000
Post-modification recorded investment		$ 424,000	55,000	$ 424,000
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Other information
Total Past Due	$ 623,000		$ 623,000		3,035,000
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member] | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract	1		1
Pre-modification recorded investment	$ 1,159,000		$ 1,159,000
Post-modification recorded investment	1,122,000		1,122,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans | Construction Real Estate, Commercial Speculative Loan [Member]
Other information
Total Past Due					350,000
Residential Portfolio Segment [Member] | Residential Investor Loan [Member]
Other information
Total Past Due	496,000		496,000		957,000
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member]
Other information
Total Past Due	413,000		$ 413,000		1,946,000
Residential Portfolio Segment [Member] | Residential Owner Occupied Loan [Member] | Home Affordable Modification Program [Member]
Troubled debt restructurings - modified during the period
# of contracts		1	3	3
Pre-modification recorded investment		$ 211,000	$ 399,000	$ 383,000
Post-modification recorded investment		$ 211,000	297,000	$ 331,000
Residential Portfolio Segment [Member] | Home Equity Line of Credit
Other information
Total Past Due	738,000		$ 738,000		775,000
Residential Portfolio Segment [Member] | Home Equity Line of Credit | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract			1
Pre-modification recorded investment			$ 39,000
Post-modification recorded investment			$ 38,000
Residential Portfolio Segment [Member] | Home Equity Line of Credit | Home Affordable Modification Program [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract			1
Pre-modification recorded investment			$ 39,000
Post-modification recorded investment			34,000
Residential Portfolio Segment [Member] | Home Equity Line of Credit | Residential Owner Occupied Loan [Member] | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts		2		9
Pre-modification recorded investment		$ 93,000		$ 596,000
Post-modification recorded investment		$ 92,000		$ 587,000
Residential Portfolio Segment [Member] | Home Equity Line of Credit | Residential Owner Occupied Loan [Member] | Interest Rate Concession Below Normal Market [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract				1
Pre-modification recorded investment				$ 24,000
Post-modification recorded investment				$ 24,000
Commercial Portfolio Segment [Member]
Other information
Total Past Due					410,000
90 Days or Greater Past Due
Other information
Total Past Due	18,000		18,000		917,000
90 Days or Greater Past Due | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Other information
Total Past Due					33,000
90 Days or Greater Past Due | Commercial Real Estate Portfolio Segment [Member] | Construction Loans | Construction Real Estate, Commercial Speculative Loan [Member]
Other information
Total Past Due					350,000
90 Days or Greater Past Due | Residential Portfolio Segment [Member] | Home Equity Line of Credit
Other information
Total Past Due	$ 18,000		$ 18,000
90 Days or Greater Past Due | Commercial Portfolio Segment [Member]
Other information
Total Past Due					$ 352,000

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