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Loans - TDR (Details)	12 Months Ended		24 Months Ended
	Dec. 31, 2019 USD ($) contract	Dec. 31, 2018 USD ($) contract	Dec. 31, 2019 USD ($)
Troubled debt restructurings - modified during the period
# of contracts | contract	7	21
Pre-modification recorded investment	$ 2,076,000	$ 1,894,000
Post-modification recorded investment	1,949,000	$ 1,709,000
TDR's defaulted
# of contracts		0	0
Other information
Commitments to lend to borrowers whose loans were classified as impaired	0		$ 0
Total Past Due	16,935,000	$ 11,906,000	16,935,000
Real estate - commercial | Commercial Real Estate Owner Occupied Special Purpose Loan [Member]
Other information
Total Past Due	852,000	$ 961,000	852,000
Real estate - commercial | 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		46,000
Real estate - commercial | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Other information
Total Past Due	$ 2,411,000	$ 1,801,000	2,411,000
Real estate - commercial | Commercial Real Estate, Owner Occupied General Purpose Loan [Member] | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract		1
Pre-modification recorded investment		$ 427,000
Post-modification recorded investment		396,000
Real estate - commercial | Commercial Real Estate, Owner Occupied General Purpose Loan [Member] | Deferral [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract	1
Pre-modification recorded investment	$ 421,000
Post-modification recorded investment	418,000
Real estate - commercial | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Other information
Total Past Due	$ 1,064,000	3,035,000	1,064,000
Real estate - commercial | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member] | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract	1
Pre-modification recorded investment	$ 58,000
Post-modification recorded investment	$ 54,000
Real estate - commercial | Commercial Real Estate, Retail Properties Loan [Member]
Other information
Total Past Due		620,000
Real estate - commercial | Commercial Real Estate, Retail Properties Loan [Member] | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract	1
Pre-modification recorded investment	$ 1,159,000
Post-modification recorded investment	1,146,000
Real estate - commercial | Construction Loans | Construction Real Estate, Commercial Speculative Loan [Member]
Other information
Total Past Due		350,000
Real estate - residential | Residential Investor Loan [Member]
Other information
Total Past Due	266,000	957,000	266,000
Real estate - residential | Residential Owner Occupied Loan [Member]
Other information
Total Past Due	$ 4,801,000	$ 1,946,000	4,801,000
Real estate - residential | Residential Owner Occupied Loan [Member] | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract		1
Pre-modification recorded investment		$ 34,000
Post-modification recorded investment		$ 29,000
Real estate - residential | Residential Owner Occupied Loan [Member] | Home Affordable Modification Program [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract	3	4
Pre-modification recorded investment	$ 399,000	$ 502,000
Post-modification recorded investment	293,000	443,000
Real estate - residential | Residential Revolving and Junior Liens Loan [Member]
Other information
Total Past Due	$ 803,000	$ 775,000	803,000
Real estate - residential | HELOC | Others [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract		9
Pre-modification recorded investment		$ 622,000
Post-modification recorded investment		$ 600,000
Real estate - residential | HELOC | Home Affordable Modification Program [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract		3
Pre-modification recorded investment		$ 117,000
Post-modification recorded investment		$ 115,000
Real estate - residential | HELOC | Rate
Troubled debt restructurings - modified during the period
# of contracts | contract		1
Pre-modification recorded investment		$ 24,000
Post-modification recorded investment		$ 24,000
Real estate - residential | HELOC | Residential Revolving and Junior Liens Loan [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract	1
Pre-modification recorded investment	$ 39,000
Post-modification recorded investment	38,000
Real estate - construction | Construction Real Estate All Other [Member] | Home Affordable Modification Program [Member]
Troubled debt restructurings - modified during the period
# of contracts | contract		1
Pre-modification recorded investment		$ 58,000
Post-modification recorded investment		56,000
Commercial
Other information
Total Past Due	4,299,000	410,000	4,299,000
90 Days or Greater Past Due
Other information
Total Past Due	2,545,000	917,000	2,545,000
90 Days or Greater Past Due | Real estate - commercial | Commercial Real Estate, Owner Occupied General Purpose Loan [Member]
Other information
Total Past Due		33,000
90 Days or Greater Past Due | Real estate - commercial | Commercial Real Estate, Non Owner Occupied General Purpose Loan [Member]
Other information
Total Past Due	343,000		343,000
90 Days or Greater Past Due | Real estate - commercial | Construction Loans | Construction Real Estate, Commercial Speculative Loan [Member]
Other information
Total Past Due		350,000
90 Days or Greater Past Due | Real estate - residential | Residential Revolving and Junior Liens Loan [Member]
Other information
Total Past Due	18,000		18,000
90 Days or Greater Past Due | Commercial
Other information
Total Past Due	$ 2,103,000	$ 352,000	$ 2,103,000

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