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Military Privatization Military Privatization (Details) (USD $) In Thousands, unless otherwise specified			9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 ASUS Contracts	Sep. 30, 2014 ASUS Contracts Reportable Legal Entities [Member]
Period of Fixed Price Contracts to Operate and Maintain Water Systems at Various Military Bases			50 years
Contracted services				$ 2,600
Billings in excess of costs and estimated earnings on uncompleted contracts	$ 15,699	$ 6,852		$ 6,000

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 that are expected to be realized within one year or one operating cycle, whichever is longer, from the reporting date.

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