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Loss and Loss Adjustment Expenses (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Reconciliation of beginning and ending reserve balances, net of related amounts recoverable from reinsurers |  |  |
Reserves for loss and loss adjustment expenses ("LAE")/Reserves for loss and LAE at beginning of year | $ 538,214 | $ 532,204 | $ 534,655
Less amounts recoverable from reinsurers on unpaid loss and LAE | 60,937 | 65,536 | 60,435
Reserves for loss and LAE at beginning of year | 477,277 | 466,668 | 474,220
Add: |  |  |
Provision for loss and LAE for claims occurring in the current year, net of reinsurance | 222,393 | 196,269 | 179,022
Loss and LAE Related to Prior Periods | (2,490) | (6,563) | (21,634)
Incurred losses during the current year, net of reinsurance | 219,903 | 189,706 | 157,388
Less loss and LAE payments for claims, net of reinsurance, occurring during: |  |  |
Current year | 50,423 | 53,213 | 47,385
Prior years | 131,497 | 125,884 | 117,555
Less loss and LAE payments for claims, net of reinsurance | 181,920 | 179,097 | 164,940
Reserves for loss and LAE at ending of year | 515,260 | 477,277 | 466,668
Add amounts recoverable from reinsurers on unpaid loss and LAE | 55,190 | 60,937 | 65,536
Reserves for loss and LAE/Reserves for loss and LAE at end of year | $ 570,450 | $ 538,214 | $ 532,204

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- Definition Total amount of payments made during the reporting period to settle insured claims and pay costs incurred in the claims settlement process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-5 -Paragraph 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Financial Reporting Release (FRR) -Number 403 -Paragraph 04 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 + Details
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- Definition The estimated cost of settling claims under the terms of the underlying insurance policies and assumed and ceded insurance contracts as of the balance sheet date, including an estimate for claims which have been incurred but not reported and the actual and estimated costs of settling claims. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-5 -Paragraph 11 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Financial Reporting Release (FRR) -Number 403 -Paragraph 04 -Subparagraph b Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-5 -Paragraph 10 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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