Commitments and Contingencies (Details)	12 Months Ended
Dec. 31, 2018 USD ($) loan	Dec. 31, 2017 USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Maximum period of variable rate	1 year
Deposits	$ 1,183,873,000	$ 866,383,000
Loan amount	1,240,000,000
Service fees on deposit accounts	1,482,000	416,000
Commitments to Extend Credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks liability	150,600,000	118,700,000
Standby Letters of Credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks liability	19,300,000	14,000,000
Medical Use Cannabis Customers, Deposit Balances \| Product Concentration Risk
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Deposits	$ 253,800,000	$ 37,000,000
Concentration risk, percentage	21.40%	4.30%
Service fees on deposit accounts	$ 613,000	$ 0
Two Customers \| Medical Use Cannabis Customers, Deposit Balances \| Customer Concentration Risk
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Concentration risk, percentage	65.90%	28.50%
Cannabis Related Loan
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Number of loans \| loan	1
Loan amount	$ 970,000	$ 1,000,000
Interest income	$ 51,000	$ 50,000

Financing Receivable, Number Of Loans

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Maximum period of guarantees the performance of a customer to a third party under loan commitments and standby letter of credit.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

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-SubTopic 210
-Section S99
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- Definition

The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Income from mortgage banking activities (fees and commissions) and servicing real estate mortgages, credit cards, and other financial assets held by others net of any related impairment of capitalized service costs. Also includes any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans.

+ References

No definition available.

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- Definition

Amount of interest and fee income from loans classified as other.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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