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Organization and Significant Accounting Policies Level 4 (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Fixed Index Annuity Deposits - Index Strategies | $ 2,223,652 | $ 2,835,422 | $ 2,312,720
Fixed Index Annuity Deposits - Fixed Strategy | 1,206,784 | 1,375,321 | 1,472,576
Fixed Index Annuities | 3,430,436 | 4,210,743 | 3,785,296
Fixed Rate Annuities | 148,105 | 247,237 | 232,832
Single Premium Immediate Annuities (SPIA's) | 164,657 | 305,603 | 171,628
Premiums Earned, Net, Life | 12,877 | 12,151 | 11,982
Premiums and Annuity Deposits | $ 3,756,075 | $ 4,775,734 | $ 4,201,738

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- Definition Premiums recognized as revenue in the period earned on all life insurance and reinsurance contracts after subtracting any amounts ceded to another insurer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b),(c) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 113 -Paragraph 27 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.1) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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