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Derivative Instruments (Details 2) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
AOCI Cash Flow Hedges [Roll Forward] |  |
Accumulated Other Comprehensive Income Loss Related To Cash Flow Hedge | $ (828,000) | $ 0
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) | 2,613,000 | (628,000)
Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net | 0 | 0
Cash Flow Hedge Gain (Loss) Reclassified to Investment Income, Net | (1,382,000) | (200,000)
Accumulated Other Comprehensive Income Loss Related To Cash Flow Hedge | $ 403,000 | $ (828,000)

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- Definition The amount of net gains or losses on a cash flow hedge reclassified in the period to earnings from accumulated other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6887037&loc=d3e80784-113994 + Details
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