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Equity-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of unvested share activity
The activity related to these awards is summarized below:
 
Unvested
Shares
 
Average
Grant Date
Fair Value(*)
Outstanding at December 31, 2010
502,902

 
$
25.00

Awards granted - 2011 (**)
173,982

 
$
28.90

Awards vested - 2011
(201,361
)
 
$
25.00

Awards forfeited - 2011
(65,017
)
 
$
25.36

Outstanding at December 31, 2011
410,506

 
$
26.59

Awards granted - 2012 (**)
246,432

 
$
27.81

Awards vested - 2012
(162,986
)
 
$
25.20

Award forfeited - 2012
(43,400
)
 
$
27.74

Outstanding at December 31, 2012
450,552

 
$
26.87

Awards granted - 2013 (**)
201,451

 
$
52.78

Awards vested - 2013
(107,988
)
 
$
25.71

Award forfeited - 2013
(13,412
)
 
$
32.36

Outstanding at December 31, 2013
530,603

 
$
36.80

(*)
The grant date fair value of awards issued prior to our listing on the New York Stock Exchange was estimated at $25 per share, which was the per share reorganization value of the Company. Subsequent to our listing, the grant date fair value is determined based on the closing price on the New York Stock Exchange on the date of issue.
(**)
For certain of the awards granted in 2013, 2012 and 2011, the number of shares that will vest is contingent upon our achievement of certain specified targets. Awards with performance conditions are valued based on the grant date closing price on the New York Stock Exchange assuming that 100% of the awards will vest. Awards with market conditions are valued using Monte Carlo simulations. Market awards issued in 2013 were valued using blended volatility of 28.9%, comprised of 50% historical volatility and 50% implied volatility and a risk-free rate based on the three-year United States Treasury spot rate on the grant date. If we meet the specified maximum targets, approximately 74 thousand, 41 thousand and 26 thousand additional shares could vest related to the 2013, 2012 and 2011 awards, respectively.
Summary of scheduled vesting of awards Granted
The following table, which includes potential shares from specified targets, assuming maximum achievement (as discussed above), summarizes the scheduled vesting of awards that have been granted as of December 31, 2013:
Year ended December 31, 2014
165,980

shares
Year ended December 31, 2015
244,912

shares
Year ended December 31, 2016
260,898

shares
Rose Rock equity incentive plan [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of unvested share activity
 
Unvested Units
 
Average Grant Date Fair Value
Outstanding at December 31, 2011
—

 
$
—

Awards granted - 2012
46,069

 
$
21.97

Awards vested - 2012
—

 
$
—

Awards forfeited - 2012
(2,109
)
 
$
20.60

Outstanding at December 31, 2012
43,960

 
$
21.91

Awards granted - 2013
49,104

 
$
34.41

Awards vested - 2013
(9,333
)
 
$
27.25

Awards forfeited - 2013
(783
)
 
$
34.40

Outstanding at December 31, 2013
82,948

 
$
28.59
Summary of scheduled vesting of awards Granted
he following table summarizes the scheduled vesting of awards that have been granted as of December 31, 2013:
Year ended December 31, 2014
5,712

common units
Year ended December 31, 2015
34,627

common units
Year ended December 31, 2016
42,609

common units
Expense of $0.8 million and $0.3 million related to these awards was recorded for the years ended December 31, 2013 and 2012, respectively, and represents an increase in noncontrolling interests in consolidated subsidiaries.  As of December 31, 2013, there was $1.5 million of total unrecognized compensation cost related to the nonvested awards, which is expected to be recognized over a weighted-average period of 19 months.
The holders of certain of these restricted unit awards granted prior to 2013 are entitled to equivalent distributions (“Unvested Unit Distributions” or “UUD’s”) to be received upon vesting of the restricted unit awards. The distributions will be settled in common units based on the market price of Rose Rock's limited partner common units as of the close of business on the vesting date. The UUD’s are subject to the same forfeiture and acceleration conditions as the associated restricted units. For the year ended December 31, 2013, 406 UUDs were issued upon the vesting of these restricted units. At December 31, 2013, the value of the UUD’s was approximately $101 thousand. This is equivalent to approximately 2,617 common units based on the year end close of business market price of Rose Rock's common units of $38.70 per unit. Holders of restricted units granted in 2013 are entitled to received distributions made during the vesting period in cash upon vesting.