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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) $ in Thousands	Jun. 30, 2015 USD ($) loans	Dec. 31, 2014 USD ($) loans
Troubled debt restructurings
Number of Loans | loans	37	40
Pre-Modification Recorded Investment	$ 13,071	$ 13,495
Post-Modification Recorded Investment	$ 8,803	$ 9,396
Commercial real estate — owner occupied
Troubled debt restructurings
Number of Loans | loans	2	2
Pre-Modification Recorded Investment	$ 625	$ 624
Post-Modification Recorded Investment	$ 564	$ 577
Commercial real estate — non-owner occupied
Troubled debt restructurings
Number of Loans | loans	5	5
Pre-Modification Recorded Investment	$ 1,151	$ 1,095
Post-Modification Recorded Investment	$ 907	$ 970
Construction and land development
Troubled debt restructurings
Number of Loans | loans	3	4
Pre-Modification Recorded Investment	$ 6,034	$ 6,260
Post-Modification Recorded Investment	$ 4,678	$ 5,157
Multi-family
Troubled debt restructurings
Number of Loans | loans	1	1
Pre-Modification Recorded Investment	$ 184	$ 184
Post-Modification Recorded Investment	$ 10	$ 17
1-4 family
Troubled debt restructurings
Number of Loans | loans	16	16
Pre-Modification Recorded Investment	$ 2,119	$ 2,119
Post-Modification Recorded Investment	$ 1,435	$ 1,368
Commercial and industrial
Troubled debt restructurings
Number of Loans | loans	3	4
Pre-Modification Recorded Investment	$ 201	$ 361
Post-Modification Recorded Investment	$ 144	$ 155
Direct financing leases, net
Troubled debt restructurings
Number of Loans | loans	0	0
Pre-Modification Recorded Investment	$ 0	$ 0
Post-Modification Recorded Investment	$ 0	$ 0
Home equity and second mortgages
Troubled debt restructurings
Number of Loans | loans	6	6
Pre-Modification Recorded Investment	$ 681	$ 772
Post-Modification Recorded Investment	$ 375	$ 431
Other
Troubled debt restructurings
Number of Loans | loans	1	2
Pre-Modification Recorded Investment	$ 2,076	$ 2,080
Post-Modification Recorded Investment	$ 690	$ 721

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