Dispositions (Components of income (loss) from discontinued operations, net of tax) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement Additional Disclosures by Disposal Groups Including Discontinued Operations [Line Items]
Income tax expense (benefit)	$ 4,063	$ (485)	$ 10,131	$ 3,786
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	(5,886)	2,366	(15,735)	(20,045)
Segment, Discontinued Operations [Member]
Income Statement Additional Disclosures by Disposal Groups Including Discontinued Operations [Line Items]
Revenues	34,210	92,203	111,735	209,394
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ (5,886)	$ 2,366	$ (15,735)	$ (20,045)

Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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