Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]: Disposal Groups, Including Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	$ 0	$ 117,636
Discontinued Operation, Tax Effect of Discontinued Operation	0	7,866
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 0	109,770
Risk Solutions Sale and Coinsurance Transaction Member \| Discontinued Operations, Disposed of by Sale
Discontinued Operation, Tax Effect of Discontinued Operation		7,866
Risk Solutions Sale and Coinsurance Transaction Member \| Discontinued Operations, Disposed of by Sale \| Medical Stop-Loss Segment Member
Disposal Group, Including Discontinued Operation, Revenue		6,406
Disposal Group, Including Discontinued Operation, General and Administrative Expense		5,689
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax		717
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax		116,919
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		117,636
Discontinued Operation, Tax Effect of Discontinued Operation		7,866
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		$ 109,770

Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Amount before tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until its disposal.

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Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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Amount of general and administrative expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

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Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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