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Uncompleted Contracts - Gross and Net Amounts of Uncompleted Contracts (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Jun. 30, 2013
Disclosure Customer Contracts Additional Information [Abstract]
Costs incurred and estimated earnings recognized on uncompleted contracts	$ 1,347,946	$ 802,588
Billings on uncompleted contracts	1,350,282	791,663
Total	(2,336)	10,925
Shown on balance sheet as:
Costs and estimated earnings in excess of billings on uncompleted contracts	98,278	73,773
Billings on uncompleted contracts in excess of costs and estimated earnings	100,614	62,848
Total	$ (2,336)	$ 10,925

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Liability attributable to (i) billings in excess of costs under the percentage of completion contract accounting method representing the difference between contractually invoiced amounts (billings) and revenue recognized based, for example, on costs incurred to estimated total costs at period end or (ii) contractually invoiced amounts (billings) in excess of costs incurred and accumulated under the completed contract accounting method.

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Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings.

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Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings which is expected to be collected within one year or the normal operating cycle, if longer.

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