XML 26 R33.htm IDEA: XBRL DOCUMENT
v2.4.1.9

SHAREHOLDERS' EQUITY (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2014
SHAREHOLDERS' EQUITY [Abstract] |
Summary of Employee Stock Option Plans Activity in All Plans | A summary of the Employee Stock Option Plans activity in all plans for the years ended December 31, 2014, 2013 and 2012 is as follows:
|  | Year ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
|  | Employee Options |  |  | Weighted Average Exercise Price |  |  | Employee Options |  |  | Weighted Average Exercise Price |  |  | Employee Options |  |  | Weighted Average Exercise Price |
Outstanding at beginning |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
of the period |  |  | 2,500,949 |  |  | $ | 3.60 |  |  |  | 2,259,282 |  |  | $ | 3.80 |  |  |  | 2,318,399 |  |  | $ | 3.94 |
Granted |  |  | -- |  |  | $ | -- |  |  |  | 270,000 |  |  | $ | 2.08 |  |  |  | 150,000 |  |  | $ | 2.32 |
Forfeited |  |  | (3,333 | ) |  | $ | 2.08 |  |  |  | -- |  |  | $ | -- |  |  |  | (10,000 | ) |  | $ | 2.32 |
Expired |  |  | -- |  |  | $ | -- |  |  |  | (28,333 | ) |  | $ | 4.68 |  |  |  | (194,950 | ) |  | $ | 4.47 |
Exercised |  |  | (400,203 | ) |  | $ | 2.46 |  |  |  | - |  |  | $ | - |  |  |  | (4,167 | ) |  | $ | 2.52 |
Outstanding at period end |  |  | 2,097,413 |  |  | $ | 3.82 |  |  |  | 2,500,949 |  |  | $ | 3.60 |  |  |  | 2,259,282 |  |  | $ | 3.80 |
Exercisable at period end |  |  | 1,949,080 |  |  | $ | 3.95 |  |  |  | 2,137,619 |  |  | $ | 3.85 |  |  |  | 2,119,282 |  |  | $ | 3.90 |
Weighted average fair |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
value of options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
granted during |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
the period |  |  |  |  |  | $ | -- |  |  |  |  |  |  | $ | 1.20 |  |  |  |  |  |  | $ | 1.30 |
Summary of Information about Employee Stock Options Outstanding and Exercisable | The following table summarizes information about employee stock options outstanding and exercisable at December 31, 2014:
Grant Price Range |  |  | Employee Options Outstanding at December 31, 2014 |  |  | Weighted average remaining contractual life in years |  |  | Weighted average exercise price |  |  | Employee Options exercisable at December 31, 2014 |  |  | Weighted average exercise price |
$ | 2.08 |  |  |  | 270,000 |  |  |  | 8.74 |  |  | $ | 2.08 |  |  |  | 166,668 |  |  | $ | 2.08 |
$ | 2.09 - $2.32 |  |  |  | 123,333 |  |  |  | 7.53 |  |  | $ | 2.32 |  |  |  | 78,332 |  |  | $ | 2.32 |
$ | 2.33 - $2.52 |  |  |  | 405,312 |  |  |  | 3.73 |  |  | $ | 2.52 |  |  |  | 405,312 |  |  | $ | 2.52 |
$ | 2.53 - $3.86 |  |  |  | 273,768 |  |  |  | 0.79 |  |  | $ | 3.86 |  |  |  | 273,768 |  |  | $ | 3.86 |
$ | 3.87 - $4.97 |  |  |  | 1,025,000 |  |  |  | 2.57 |  |  | $ | 4.97 |  |  |  | 1,025,000 |  |  | $ | 4.97 |
|  |  |  |  | 2,097,413 |  |  |  | 3.65 |  |  | $ | 3.82 |  |  |  | 1,949,080 |  |  | $ | 3.95 |
Summary of Number of Options Available for Grant and Intrinsic Value of Options Outstanding | The following table sets forth the number of options available for grant as well as the intrinsic value of the options outstanding and exercisable at:
|  | At December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Available for future grant |  |  | 790,000 |  |  |  | 790,000 |  |  |  | 1,060,000 |
Aggregate intrinsic value of options outstanding |  | $ | -- |  |  | $ | 1,661,000 |  |  | $ | -- |
Aggregate intrinsic value of options exercisable |  | $ | -- |  |  | $ | 1,073,000 |  |  | $ | -- |
Director Stock Award Plan Activity | Activity for the years ended December 31, 2014, 2013 and 2012 for director options is presented in the following table:
|  | Year ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
|  | Director Options |  |  | Weighted Average Exercise Price |  |  | Director Options |  |  | Weighted Average Exercise Price |  |  | Director Options |  |  | Weighted Average Exercise Price |
Outstanding at beginning |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
of the period |  |  | 146,000 |  |  | $ | 2.93 |  |  |  | 150,000 |  |  | $ | 3.05 |  |  |  | 210,000 |  |  | $ | 3.10 |
Granted |  |  | 60,000 |  |  | $ | 3.77 |  |  |  | 36,000 |  |  | $ | 2.08 |  |  |  | 80,000 |  |  | $ | 2.78 |
Forfeited |  |  | -- |  |  | $ | -- |  |  |  | -- |  |  | $ | -- |  |  |  | -- |  |  | $ | -- |
Expired |  |  | -- |  |  | $ | -- |  |  |  | (40,000 | ) |  | $ | 2.60 |  |  |  | (120,000 | ) |  | $ | 3.05 |
Exercised |  |  | (27,334 | ) |  | $ | 2.53 |  |  |  | - |  |  | $ | - |  |  |  | (20,000 | ) |  | $ | 2.52 |
Outstanding at period end |  |  | 178,666 |  |  | $ | 3.28 |  |  |  | 146,000 |  |  | $ | 2.93 |  |  |  | 150,000 |  |  | $ | 3.05 |
Exercisable at period end |  |  | 82,333 |  |  | $ | 3.30 |  |  |  | 56,668 |  |  | $ | 3.46 |  |  |  | 63,335 |  |  | $ | 3.01 |
Weighted average fair |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
value of options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
granted during |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
the period |  |  |  |  |  | $ | 2.27 |  |  |  |  |  |  | $ | 1.20 |  |  |  |  |  |  | $ | 1.59 |
Summary of Information About Directors Plan | The following table summarizes information about director options outstanding and exercisable at December 31, 2014:
Grant Price Range |  |  | Director Options Outstanding at December 31, 2014 |  |  | Weighted average remaining contractual life in years |  |  | Weighted average exercise price |  |  | Director Options exercisable at December 31, 2014 |  |  | Weighted average exercise price |
$ | 2.08 |  |  |  | 27,000 |  |  |  | 8.50 |  |  | $ | 2.08 |  |  |  | 9,000 |  |  | $ | 2.08 |
$ | 2.09 - $2.32 |  |  |  | 6,666 |  |  |  | 7.53 |  |  | $ | 2.32 |  |  |  | 3,333 |  |  | $ | 2.32 |
$ | 2.33 - $2.52 |  |  |  | 10,000 |  |  |  | 3.73 |  |  | $ | 2.52 |  |  |  | 10,000 |  |  | $ | 2.52 |
$ | 2.53 - $2.85 |  |  |  | 45,000 |  |  |  | 7.23 |  |  | $ | 2.85 |  |  |  | 30,000 |  |  | $ | 2.85 |
$ | 2.86 - $4.19 |  |  |  | 80,000 |  |  |  | 8.90 |  |  | $ | 3.88 |  |  |  | 20,000 |  |  | $ | 4.19 |
$ | 4.20 - $5.04 |  |  |  | 10,000 |  |  |  | 5.48 |  |  | $ | 5.04 |  |  |  | 10,000 |  |  | $ | 5.04 |
|  |  |  |  | 178,666 |  |  |  | 7.88 |  |  | $ | 3.28 |  |  |  | 82,333 |  |  | $ | 3.30 |
Summary of Director Options Available for Grant and Intrinsic Value of Options Outstanding | The following table sets forth the number of options available for grant as well as the intrinsic value of the options outstanding and exercisable at:
|  | At December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Available for future grant |  |  | 101,811 |  |  |  | 131,359 |  |  |  | 126,526 |
Aggregate intrinsic value of options outstanding |  | $ | -- |  |  | $ | 142,000 |  |  | $ | -- |
Aggregate intrinsic value of options exercisable |  | $ | -- |  |  | $ | 35,000 |  |  | $ | -- |
Summary of Valuation Assumptions in Stock Option and Warrant Valuation | USE has computed the fair values of its employee and director options using the Black Scholes pricing model and the following weighted average assumptions:
| For the years ended December 31,
| 2014 | 2013 | 2012
Risk-free interest rate | 2.06% | 1.66% | 0.82% to 1.41%
Expected lives (years) | 6.0 | 6.0 | 5.0 to 6.0
Expected volatility | 65.45% | 62.59% | 61.87% to 63.59%
Expected dividend yield | -- | -- | --

X
- Definition Tabular disclosure of the total intrinsic value of options exercised (or share units converted), share-based liabilities paid, and the total fair value of shares vested during the year attributable to non-employee directors + References No definition available. + Details
Name: | useg_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValueNonemployeeDirectorsTableTextBlock
Namespace Prefix: | useg_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References No definition available. + Details
Name: | useg_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeDirectorsPlanTableTextBlock
Namespace Prefix: | useg_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the total intrinsic value of options exercised (or share units converted), share-based liabilities paid, and the total fair value of shares vested during the year. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock awards granted to nonemployee directors that were outstanding at the beginning and end of the year, and the number of awards that were granted, exercised or converted, forfeited, and expired during the year. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationNonemployeeDirectorStockAwardPlanActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + 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 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration