Past Due Loans, Allowance For Credit Losses, Impaired Loans and TDRS (Details) - TDRs By Class - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		$ 3,067	$ 3,704
Non-accrual	[1]	2,070	19,904
Total		5,137	23,608	$ 7,397
Commercial And Industrial
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		299	269
Non-accrual	[1]	1,077	18,799
Total		1,376	19,068
Agricultural
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		0	0
Non-accrual	[1]	0	0
Total		0	0
Office Retail and Industrial
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		558	586
Non-accrual	[1]	0	0
Total		558	586
Multi-Family
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		605	887
Non-accrual	[1]	195	232
Total		800	1,119
Construction
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		0	0
Non-accrual	[1]	0	0
Total		0	0
Other Commercial Real Estate
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		350	433
Non-accrual	[1]	0	183
Total		350	616
Total Commercial Real Estate
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		1,513	1,906
Non-accrual	[1]	195	415
Total		1,708	2,321
Total Corporate Loans
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		1,812	2,175
Non-accrual	[1]	1,272	19,214
Total		3,084	21,389
Home Equity Line of Credit
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		390	651
Non-accrual	[1]	692	506
Total		1,082	1,157
1-4 family mortgage loans
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		865	878
Non-accrual	[1]	106	184
Total		971	1,062
Installment Loans
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		0	0
Non-accrual	[1]	0	0
Total		0	0
Total Consumer Loans
Past Due Loans, Allowance For Credit Losses, and Impaired Loans (Details) - TDRs By Class [Line Items]
Accruing		1,255	1,529
Non-accrual	[1]	798	690
Total		$ 2,053	$ 2,219

[1] These TDRs are included in non-accrual loans in the preceding tables.