Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]: Disposal Groups, Including Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	$ 0	$ 0	$ 0	$ 117,636
Discontinued Operation, Tax Effect of Discontinued Operation	0	(142)	0	7,724
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 0	142	$ 0	109,912
Risk Solutions Sale and Coinsurance Transaction Member \| Discontinued Operations, Disposed of by Sale
Discontinued Operation, Tax Effect of Discontinued Operation				7,724
Risk Solutions Sale and Coinsurance Transaction Member \| Discontinued Operations, Disposed of by Sale \| Medical Stop-Loss Segment Member
Disposal Group, Including Discontinued Operation, Revenue		0		6,406
Disposal Group, Including Discontinued Operation, General and Administrative Expense		0		5,689
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax		0		717
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax		0		116,919
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		0		117,636
Discontinued Operation, Tax Effect of Discontinued Operation		(142)		7,724
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		$ 142		$ 109,912

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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