Discontinued Operations - Results of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax provision	$ 29,900
Income from discontinued operations, net of tax	27,263				(2,981)			30,002	861
Granville-Phillips [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	4,356	7,453	7,515	7,555	7,301	7,137	6,519	19,324	20,957	28,512
Income from discontinued operations	579	1,825	2,484	1,920	2,257	2,198	1,404	4,888	5,859	7,779
Gain on the sale of the discontinued operations	56,804	0	0					56,804	0
Income tax provision	30,120	663	907	(2,183)	5,238	(456)	216	31,690	4,998	2,815
Income from discontinued operations, net of tax	$ 27,263	$ 1,162	$ 1,577	$ 4,103	$ (2,981)	$ 2,654	$ 1,188	$ 30,002	$ 861	$ 4,964

Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income 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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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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- Definition

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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