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Background and Basis Of Presentation Business Combination (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015 | Nov. 06, 2015
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Gross loans | $ 2,877,117 | $ 2,862,534 |
Deposits | 3,187,271 | 3,083,975 |
Business Combination, Premium on Non-Time Deposits |  |  | 5.50%
Business Combination, Premium on Loans |  |  | 1.00%
American Founders Bank [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Gross loans | $ 108,584 | $ 112,862 | $ 119,000
Deposits |  |  | $ 145,000

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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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