Annual report pursuant to Section 13 and 15(d)

Deferred Revenue (Details)

v2.4.1.9
Deferred Revenue (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
item
Deferred Revenue Disclosure [Abstract]  
Number of contracts with delivery obligations 2urg_NumberOfSalesContractsWithDeliveryObligations
Cash payment received $ 5.1us-gaap_IncreaseDecreaseInDeferredRevenue