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Reinsurance (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Allowance for Reinsurance Recoverable |  |
Valuation allowance recorded against reinsurance recoverable | $ 1.6 | $ 1.0
Reinsurance Recoverable | Largest reinsurance recoverable, Customer One |  |
Concentration risk percentage | 21.50% | 35.40%
Reinsurance Recoverable | Largest reinsurance recoverable, Customer Two |  |
Concentration risk percentage | 13.80% | 14.90%
Reinsurance Recoverable | Largest reinsurance recoverable, Customer Three |  |
Concentration risk percentage | 13.10% | 7.00%
Allowance for Reinsurance Recoverable | Largest reinsurance recoverable, Customer One |  |
Concentration risk percentage | 22.70% | 17.90%
Allowance for Reinsurance Recoverable | Largest reinsurance recoverable, Customer Two |  |
Concentration risk percentage | 8.30% | 4.00%
Allowance for Reinsurance Recoverable | Largest reinsurance recoverable, Customer Three |  |
Concentration risk percentage | 3.20% | 2.90%

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611 + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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