XML 85 R57.htm IDEA: XBRL DOCUMENT v3.3.1.900

Stock-Based Compensation - Summary of Stock Options Outstanding and Exercisable by Stock Option Plan (Details) - $ / shares	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Outstanding Stock Options, Number of Options Outstanding	326,399	13,388	25,781
Outstanding Stock Options, Weighted Average Exercise Price	$ 24.89	$ 302.16	$ 237.00
Exercisable Stock Options Exercisable, Number of Options Exercisable	316,005	9,611
Exercisable Stock Options Exercisable, Weighted Average Exercise Price	$ 25.16	$ 405.72
2004 Plan [Member]
Outstanding Stock Options, Number of Options Outstanding	5,790
Outstanding Stock Options, Weighted Average Exercise Price	$ 121.20
Exercisable Stock Options Exercisable, Number of Options Exercisable	4,263
Exercisable Stock Options Exercisable, Weighted Average Exercise Price	$ 152.89
2004 Director's Plan [Member]
Outstanding Stock Options, Number of Options Outstanding	6,107
Outstanding Stock Options, Weighted Average Exercise Price	$ 482.34
Exercisable Stock Options Exercisable, Number of Options Exercisable	5,899
Exercisable Stock Options Exercisable, Weighted Average Exercise Price	$ 497.57
2013 Plan [Member]
Outstanding Stock Options, Number of Options Outstanding	416
Outstanding Stock Options, Weighted Average Exercise Price	$ 35.88
Exercisable Stock Options Exercisable, Number of Options Exercisable	208
Exercisable Stock Options Exercisable, Weighted Average Exercise Price	$ 35.88
Replacement Stock Options [Member]
Outstanding Stock Options, Number of Options Outstanding	314,086
Outstanding Stock Options, Weighted Average Exercise Price	$ 14.21
Exercisable Stock Options Exercisable, Number of Options Exercisable	305,635
Exercisable Stock Options Exercisable, Weighted Average Exercise Price	$ 14.26

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_PlanNameAxis=URRE_TwoThousandFourStockOptionPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=URRE_TwoThousandFourDirectorsPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=URRE_TwoThousandThirteenStockOptionPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=URRE_ReplacementStockOptionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: