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Investments (Held-To-Maturity Securities Disclosure) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | $ 163,346 | $ 201,054
Net Unrealized Gains (Losses) | 227 | 300
Carrying Value | 163,573 | 201,354
Unrecognized Holding Gains | 7,686 | 8,190
Unrecognized Holding Losses | 0 | 0
HTM, Fair Value | $ 171,259 | 209,544
Held-to-maturity Securities Average Duration | 1 year 7 months 18 days |
Obligations of States and Political Subdivisions [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | $ 138,203 | 175,269
Net Unrealized Gains (Losses) | 674 | 848
Carrying Value | 138,877 | 176,117
Unrecognized Holding Gains | 5,031 | 5,763
Unrecognized Holding Losses | 0 | 0
HTM, Fair Value | 143,908 | 181,880
Corporate Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 19,829 | 20,228
Net Unrealized Gains (Losses) | (180) | (185)
Carrying Value | 19,649 | 20,043
Unrecognized Holding Gains | 2,299 | 1,972
Unrecognized Holding Losses | 0 | 0
HTM, Fair Value | 21,948 | 22,015
Asset-Backed Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 808 | 1,030
Net Unrealized Gains (Losses) | (70) | (120)
Carrying Value | 738 | 910
Unrecognized Holding Gains | 67 | 118
Unrecognized Holding Losses | 0 | 0
HTM, Fair Value | 805 | 1,028
Commercial Mortgage Backed Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Amortized Cost | 4,506 | 4,527
Net Unrealized Gains (Losses) | (197) | (243)
Carrying Value | 4,309 | 4,284
Unrecognized Holding Gains | 289 | 337
Unrecognized Holding Losses | 0 | 0
HTM, Fair Value | $ 4,598 | $ 4,621

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- Definition The remaining aggregate increase (decrease) in the market value of held-to-maturity securities either (i) prior to the securities' transfer to a held-to-maturity designation or (ii) resulting from a non-credit other-than-temporary impairment. + References No definition available. + Details
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- Definition Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.6) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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