Income Taxes Income Tax Rate (Details)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Effective income tax rate reconciliation goodwill	0.00%	0.00%	7.00%
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Statutory federal tax rate	35.00%	(35.00%)	(35.00%)
State income and foreign taxes, net of federal tax effect	8.00%	50.00%	3.00%
Foreign tax credit	0.00%	(49.00%)	(3.00%)
Noncontrolling interests in operating subsidiaries	1.00%	1.00%	(1.00%)
Non deductible permanent items	3.00%	0.00%	0.00%
Expired net operating loss carryforwards	0.00%	0.00%	1.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	102.00%	(0.00%)	(0.00%)
Valuation allowance	(137.00%)	83.00%	31.00%
Total	12.00%	50.00%	3.00%

Effective income tax rate reconcilation, expired net operating losses

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to noncontrolling interest income (loss) exempt from income taxes.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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