Loans And Leases (Narrative) (Details) $ in Thousands		3 Months Ended
		Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($) loan	Dec. 31, 2016 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Loans		$ 360,974		$ 346,125
Cash payments of interest		56	$ 79
Loans 90 days or more past due and still accruing interest
Number of days of default payment		90 days
Total TDR's		$ 3,027		3,130
Allocated specific reserves to modified TDRs		19		22
Commitment to lend additional amounts		0		0
Number of loans modified as a TDR | loan			0
Number of TDRs in payment default | loan			0
Recorded investment of loans undergoing modifications, not TDRs		12,915	$ 4,090
Accruing TDR's		$ 2,896		2,986
Period of timely payments before reversion to accruing status		6 months
Loans And Leases Receivable Net Of Deferred Income		$ 367,916		353,050
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%
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		$ 87,101		$ 92,544
Single-Family Residential [Member] | Northpointe [Member] | Mortgage Purchase Program Member [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans		34,286		46,919
Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans And Leases Receivable Net Of Deferred Income	[1]	$ 85,929		$ 71,334

[1] Includes $2,806 and $2,874 of commercial leases at March 31, 2017 and December 31, 2016, respectively.