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Investments - Unrealized losses (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 | Dec. 31, 2013
Schedule of Available-for-sale Securities |  |
Less than 12 Months, Fair Value | $ 62,918 | $ 249,957
Less than 12 Months, Unrealized Losses | (469) | (7,236)
12 Months or More, Fair Value | 75,751 | 35,182
12 Months or More, Unrealized Losses | (1,349) | (1,793)
Total Fair Value | 138,669 | 285,139
Total Unrealized Losses | (1,818) | (9,029)
U.S. Government agencies |  |
Schedule of Available-for-sale Securities |  |
Less than 12 Months, Fair Value | 11,854 | 4,132
Less than 12 Months, Unrealized Losses | (44) | (75)
12 Months or More, Fair Value | 916 | 968
12 Months or More, Unrealized Losses | (6) | (9)
Total Fair Value | 12,770 | 5,100
Total Unrealized Losses | (50) | (84)
Obligations of states and political subdivisions |  |
Schedule of Available-for-sale Securities |  |
Less than 12 Months, Fair Value | 4,982 | 89,556
Less than 12 Months, Unrealized Losses | (37) | (5,007)
12 Months or More, Fair Value | 40,715 | 15,015
12 Months or More, Unrealized Losses | (928) | (1,510)
Total Fair Value | 45,697 | 104,571
Total Unrealized Losses | (965) | (6,517)
Held-to-maturity Securities |  |
Less than 12 Months, Fair Value | 1,055 |
Less than 12 Months, Unrealized Losses | (28) |
12 Months or More, Fair Value | 0 |
12 Months or More, Unrealized Losses | 0 |
Total Fair Value | 1,055 |
Total Unrealized Losses | 28 |
U.S. Government agencies collateralized by residential mortgage obligations |  |
Schedule of Available-for-sale Securities |  |
Less than 12 Months, Fair Value | 46,082 | 148,853
Less than 12 Months, Unrealized Losses | (388) | (2,070)
12 Months or More, Fair Value | 34,120 | 19,199
12 Months or More, Unrealized Losses | (415) | (274)
Total Fair Value | 80,202 | 168,052
Total Unrealized Losses | (803) | (2,344)
Other equity securities |  |
Schedule of Available-for-sale Securities |  |
Less than 12 Months, Fair Value |  | 7,416
Less than 12 Months, Unrealized Losses |  | (84)
12 Months or More, Fair Value |  | 0
12 Months or More, Unrealized Losses |  | 0
Total Fair Value |  | 7,416
Total Unrealized Losses |  | $ (84)

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- Definition Amount of unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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- Definition Amount of unrealized loss on securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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