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Loans And Leases (Narrative) (Details)	3 Months Ended
	Mar. 31, 2019 USD ($) loan	Mar. 31, 2018 USD ($) loan	Dec. 31, 2018 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Loans	$ 564,556,000		$ 550,683,000
Cash payments of interest	46,000	$ 50,000
Loans 90 days or more past due and still accruing interest
Number of days of default payment	90 days
Total TDR's	$ 3,135,000		3,161,000
Allocated specific reserves to modified TDRs	20,000		22,000
Commitment to lend additional amounts	$ 0		0
Number of loans modified as a TDR | loan	0	0
Number of TDRs in payment default | loan	0	0
Recorded investment of loans undergoing modifications, not TDRs	$ 5,183,000	$ 22,359,000
Accruing TDR's	3,038,000		3,061,000
Loans And Leases Receivable Net Of Deferred Income	571,580,000		557,695,000
Doubtful [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans And Leases Receivable Net Of Deferred Income	$ 0		0
Northpointe [Member] | Mortgage Purchase Program Member [Member]
Accounts Notes And Loans Receivable [Line Items]
Percent of loans risk rated for capital adequacy	100.00%
Mortgage allowance	$ 0
Percent of participation agreement interest	95.00%
Ownership interest in each loan it participates	5.00%
Single-Family Residential[Member]
Accounts Notes And Loans Receivable [Line Items]
Loans And Leases Receivable Net Of Deferred Income	$ 126,376,000		118,386,000
Single-Family Residential[Member] | Northpointe [Member] | Mortgage Purchase Program Member [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	39,399,000		36,845,000
Commercial Portfolio Segment [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans And Leases Receivable Net Of Deferred Income	$ 124,066,000		$ 126,887,000

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The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio.

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Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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