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Mortgage Loans on Real Estate (Troubled Debt Restructurings) (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 loans | Dec. 31, 2013 loans
Financing Receivable, Modifications [Line Items] |  |
Number of TDRs | 9 | 18
Principal balance outstanding | $ 18,658 | $ 45,653
Specific loan loss allowance | (4,852) | (6,653)
Net carrying amount | 13,806 | 39,000
East [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of TDRs |  | 1
Principal balance outstanding |  | 3,712
Specific loan loss allowance |  | (949)
Net carrying amount |  | 2,763
Mountain [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of TDRs |  | 7
Principal balance outstanding |  | 22,140
Specific loan loss allowance |  | (329)
Net carrying amount |  | 21,811
South Atlantic [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of TDRs | 7 | 7
Principal balance outstanding | 14,537 | 13,930
Specific loan loss allowance | (3,911) | (4,177)
Net carrying amount | 10,626 | 9,753
East North Central [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of TDRs | 1 | 1
Principal balance outstanding | 2,213 | 2,219
Specific loan loss allowance | (467) | (467)
Net carrying amount | 1,746 | 1,752
West North Central [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of TDRs | 1 | 1
Principal balance outstanding | 1,908 | 1,938
Specific loan loss allowance | (474) | (475)
Net carrying amount | 1,434 | 1,463
West South Central [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of TDRs |  | 1
Principal balance outstanding |  | 1,714
Specific loan loss allowance |  | (256)
Net carrying amount |  | $ 1,458

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- Definition Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 65 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7484272&loc=SL7484277-172609 + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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- Definition Pre-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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