|
Sales (Detail) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2015
|
Mar. 31, 2014
|
| Concentration Risk [Line Items] |
|
|
| Revenue, Net, Total |
$ 7,387us-gaap_SalesRevenueNet
|
$ 6,147us-gaap_SalesRevenueNet
|
| Concentration Risk, Percentage |
|
100.00%us-gaap_ConcentrationRiskPercentage1
|
| Customer Concentration Risk [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Concentration Risk, Percentage |
100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
|
|
| Company A [Member] | Sales Revenue, Goods, Net [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Sales Revenue, Goods, Net |
6,098us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ dei_LegalEntityAxis
= urg_CompanyMember
|
3,675us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ dei_LegalEntityAxis
= urg_CompanyMember
|
| Concentration Risk, Percentage |
|
59.80%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ dei_LegalEntityAxis
= urg_CompanyMember
|
| Company A [Member] | Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Concentration Risk, Percentage |
82.50%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ dei_LegalEntityAxis
= urg_CompanyMember
|
|
| Company B [Member] | Sales Revenue, Goods, Net [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Sales Revenue, Goods, Net |
1,282us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ dei_LegalEntityAxis
= urg_CompanyBMember
|
|
| Concentration Risk, Percentage |
|
0.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ dei_LegalEntityAxis
= urg_CompanyBMember
|
| Company B [Member] | Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Concentration Risk, Percentage |
17.40%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ dei_LegalEntityAxis
= urg_CompanyBMember
|
|
| Company C [Member] | Sales Revenue, Goods, Net [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Sales Revenue, Goods, Net |
|
2,312us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ dei_LegalEntityAxis
= urg_CompanyCMember
|
| Concentration Risk, Percentage |
|
37.60%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ dei_LegalEntityAxis
= urg_CompanyCMember
|
| Company C [Member] | Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Concentration Risk, Percentage |
0.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ dei_LegalEntityAxis
= urg_CompanyCMember
|
|
| Company A,B and C [Member] | Sales Revenue, Goods, Net [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Sales Revenue, Goods, Net |
7,380us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ dei_LegalEntityAxis
= urg_CompanyAndBMember
|
5,987us-gaap_SalesRevenueGoodsNet
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ dei_LegalEntityAxis
= urg_CompanyAndBMember
|
| Concentration Risk, Percentage |
|
97.40%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ dei_LegalEntityAxis
= urg_CompanyAndBMember
|
| Company A,B and C [Member] | Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Concentration Risk, Percentage |
99.90%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ dei_LegalEntityAxis
= urg_CompanyAndBMember
|
|
| Company A,B and C [Member] | Sales Revenue, Services, Net [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Disposal fees |
$ 7us-gaap_SalesRevenueServicesGross
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ dei_LegalEntityAxis
= urg_CompanyAndBMember
|
$ 160us-gaap_SalesRevenueServicesGross
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ dei_LegalEntityAxis
= urg_CompanyAndBMember
|
| Concentration Risk, Percentage |
|
2.60%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ dei_LegalEntityAxis
= urg_CompanyAndBMember
|
| Company A,B and C [Member] | Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] |
|
|
| Concentration Risk [Line Items] |
|
|
| Concentration Risk, Percentage |
0.10%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ dei_LegalEntityAxis
= urg_CompanyAndBMember
|
|