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Revenue From Contracts With Customers (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Revenue from External Customer [Line Items]
Deposit service charges and fees									$ 3,968,000	$ 3,953,000
Loan servicing fees									439,000	326,000
Commerical mortgage brokerage fees									138,000	0
Mortgage brokerage and banking fees									119,000	215,000
Gain on sale of equity securities									3,558,000	0
Unrealized gains on equity securities									3,427,000	0
Gain on sale of premises held-for-sale									93,000	0
Earnings on bank-owned life insurance									174,000	265,000
Bank-owned life insurance death benefit									1,389,000	0
Other									635,000	678,000
Total noninterest income	$ 8,674,000	$ 1,570,000	$ 3,094,000	$ 1,539,000	$ 1,634,000	$ 1,623,000	$ 1,607,000	$ 1,544,000	14,877,000	6,408,000
Bank Servicing [Member]
Revenue from External Customer [Line Items]
Trust and insurance commissions and annuities income									937,000	971,000
Credit and Debit Card
Revenue from External Customer [Line Items]
Deposit service charges and fees									$ 1,500,000	$ 1,400,000

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Bank Owned Life Insurance Death Benefit Income

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Noninterest income from trust.

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Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.

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Amount of commission revenue from buying and selling securities on behalf of customers.

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Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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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.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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Amount of fees and commissions from banking, advisory, brokerage, and securities underwriting activities. Activities include, but are not limited to, underwriting securities, private placements of securities, investment advisory and management services, merger and acquisition services, sale and servicing of mutual funds, and other related consulting fees.

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The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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