v2.4.0.8

STOCKHOLDER'S EQUITY (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2014
STOCKHOLDER'S EQUITY |
Schedule of RSU and PSU activity |
|  | Shares of RSU and PSU |  | Weighted Average Grant Date Fair Value |
--- | --- | --- | --- | --- | ---
Beginning balance at January 1, 2014 |  |  | — |  | $ | — |
Granted(1) |  |  | 494,980 |  |  | 20.22 |
Vested |  |  | (118,849 | ) |  | 20.26 |
Forfeited |  |  | (1,009 | ) |  | 20.18 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nonvested at June 30, 2014 |  |  | 375,122 |  | $ | 20.21 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(1) The number of shares granted under the PSU award, assumes Holdings will attain a performance target of 100%. The PSUs will vest ratably based on a scale ranging from 80% to 120% of the performance target with the vested amount ranging from 30% to 150%.

X
- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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