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Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2011 As Reported [Member] | Dec. 31, 2009 As Reported [Member] | Dec. 31, 2011 Adjustment [Member] | Dec. 31, 2009 Adjustment [Member] | Dec. 31, 2011 As Adjusted [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Adjustments to the financial statement Consolidated Balance Sheet |  |  |  |  |  |  |  |
Deferred income taxes | $ 29,521 | $ 30,048 |  | $ 29,286 |  | $ 762 |  | $ 30,048
Deferred policy acquisition costs | 18,419 | 16,578 |  | 18,756 |  | (2,178) |  | 16,578
Total assets | 1,220,946 | 1,143,973 |  | 1,148,509 |  | (4,536) |  | 1,143,973
Reinsurance premiums payable | 456 | 1,226 |  |  |  | 1,226 |  | 1,226
Insurance-related assessments | 22,244 | 19,071 |  | 21,506 |  | (2,435) |  | 19,071
Accounts payable and other liabilities | 25,649 | 23,721 |  | 25,633 |  | (1,912) |  | 23,721
Total liabilities | 839,724 | 794,536 |  | 797,657 |  | (3,121) |  | 794,536
Shareholders' equity | 381,222 | 349,437 | 328,721 | 350,852 | 306,133 | (1,415) | 304,748 | 349,437
Total liabilities and shareholders' equity | $ 1,220,946 | $ 1,143,973 |  | $ 1,148,509 |  | $ (4,536) |  | $ 1,143,973

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- Definition Assessments mandated by statute or regulatory authority that is related directly or indirectly to underwriting activities, including pools for self-insurance and excluding premium taxes and income taxes. The funds derived from the assessments generally enable a government guarantor to pay insurance claims in the event that the underwriting insurer is insolvent or otherwise unable to meet its payment obligations. + References No definition available. + Details
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