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Loans and Allowance for Loan Losses (Changes in Carrying Amount of Acquired-Impaired Loans and Accretable Yield) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Mar. 31, 2016 | Dec. 31, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |
Carrying Amount of Loans, Balance at end of period | $ 221,893 |
FDIC Acquired Loans [Member] |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |
Carrying Amount of Loans, Balance at beginning of period | 203,297 | $ 252,409
Carrying Amount of Loans, Payments received, net | (7,290) | (62,579)
Carrying Amount of Loans, Accretion | 3,209 | 13,467
Carrying Amount of Loans, Balance at end of period | 199,216 | 203,297
Accretable Yield, Balance at beginning of period | 91,564 | 112,788
Accretable Yield, Payments received, net | (28) | (422)
Accretable Yield, Accretion | (3,209) | (13,467)
Accretable Yield, Increase (decrease) in expected cash flows based on actual cash flows and changes in cash flow assumptions | 4,207 | (3,537)
Accretable Yield, Net transfers to (from) nonaccretable difference to accretable yield | 3,776 | (3,798)
Accretable Yield, Balance at end of period | 96,310 | 91,564
Acquired Loans [Member] |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |
Carrying Amount of Loans, Balance at beginning of period | 22,541 | 61,276
Carrying Amount of Loans, Payments received, net | (2,145) | (53,268)
Carrying Amount of Loans, Accretion | 2,281 | 14,533
Carrying Amount of Loans, Balance at end of period | 22,677 | 22,541
Accretable Yield, Balance at beginning of period | 37,924 | 74,668
Accretable Yield, Payments received, net | (2,598) | (21,556)
Accretable Yield, Accretion | (2,281) | (14,533)
Accretable Yield, Increase (decrease) in expected cash flows based on actual cash flows and changes in cash flow assumptions | 56 | (701)
Accretable Yield, Net transfers to (from) nonaccretable difference to accretable yield | 947 | 46
Accretable Yield, Balance at end of period | $ 34,048 | $ 37,924

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- Definition Certain loans acquired in transfer not accounted for as debt securities accretable yield payment received net. + References No definition available. + Details
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- Definition Certain loans acquired in transfer not accounted for as debt securities, carrying amount, accretion. + References No definition available. + Details
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- Definition Certain loans acquired in transfer not accounted for as debt securities, payments received, net. + References No definition available. + Details
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- Definition Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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- Definition Amount of decrease from accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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- Definition Amount of reclassification (to) from nonaccretable difference (from) to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
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