XML 107 R92.htm IDEA: XBRL DOCUMENT v3.8.0.1
Reinsurance and Policy Provisions (Amounts Ceded to Equitrust and Athene, Impact on Consolidated Statements of Operations and Consolidated Statements of Cash Flows) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Effects of Reinsurance [Line Items]                      
Annuity product charges                 $ 200,494 $ 173,579 $ 136,168
Change in fair value of derivatives $ 661,993 $ 362,525 $ 266,820 $ 386,533 $ 95,391 $ 103,794 $ 39,099 $ (74,065) 1,677,871 164,219 (336,146)
Interest sensitive and index product benefits                 2,023,668 725,472 968,053
Change in fair value of embedded derivatives                 919,735 543,465 (464,698)
Other operating costs and expenses                 111,691 102,231 96,218
Coinsurance deposits                 (6,597) (1,317,555) (80,777)
Coinsurance Agreements, EquiTrust and Athene [Member]                      
Effects of Reinsurance [Line Items]                      
Annuity product charges                 6,458 5,366 5,427
Change in fair value of derivatives                 94,382 18,446 (14,360)
Coinsurance, revenues included in consolidated statement of operations                 100,840 23,812 (8,933)
Interest sensitive and index product benefits                 177,332 93,487 88,923
Change in fair value of embedded derivatives                 35,561 23,848 (22,616)
Other operating costs and expenses                 19,877 24,039 9,922
Coinsurance, benefits and expenses included in the consolidated statement of operations                 232,770 141,374 76,229
Annuity deposits                 (387,280) (1,736,054) (471,822)
Cash payments to policyholders                 380,683 418,499 391,045
Coinsurance deposits                 $ (6,597) $ (1,317,555) $ (80,777)