v3.3.1.900

STOCKHOLDERS' EQUITY (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2015
STOCKHOLDER'S EQUITY |
Schedule of the amount of dividends and dividend equivalents paid | The following is a summary of dividends and dividend equivalents declared by Holdings' Board of Directors during the twelve months ended December 31, 2015:
Declaration Date |  | Record Date |  | Date Paid |  | Amount per Share of Common Stock |  | Total Amount Declared (In thousands) |
February 3, 2015 |  | March 9, 2015 |  | March 23, 2015 |  | $ | 0.20 |  | $ | 19,637 |
April 27, 2015 |  | June 8, 2015 |  | June 22, 2015 |  |  | 0.20 |  |  | 19,635 |
July 28, 2015 |  | September 8, 2015 |  | September 21, 2015 |  |  | 0.20 |  |  | 19,622 |
October 29, 2015 |  | December 7, 2015 |  | December 21, 2015 |  |  | 0.20 |  |  | 19,654 |
The following is a summary of dividends and dividend equivalents declared by Holdings' Board of Directors during the twelve months ended December 31, 2014:
Declaration Date |  | Record Date |  | Date Paid |  | Amount per Share of Common Stock |  | Total Amount Declared (In thousands) |
April 25, 2014 |  | June 6, 2014 |  | June 16, 2014 |  | $ | 0.20 |  | $ | 19,576 |
July 29, 2014 |  | September 5, 2014 |  | September 15, 2014 |  |  | 0.20 |  |  | 19,576 |
October 27, 2014 |  | December 5, 2014 |  | December 15, 2014 |  |  | 0.20 |  |  | 19,577 |
Schedule of RSU and PSU activity |
|  | Shares of RSU and PSU |  | Weighted Average Grant Date Fair Value |
Beginning balance at January 1, 2014 |  |  | — |  | $ | — |
Granted |  |  | 494,980 |  |  | 22.40 |
Vested |  |  | (493,971 | ) |  | 22.41 |
Forfeited |  |  | (1,009 | ) |  | 20.18 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nonvested at December 31, 2014 |  |  | — |  | $ | — |
Granted |  |  | 331,573 |  |  | 33.71 |
Vested(1) |  |  | (280,844 | ) |  | 33.96 |
Forfeited |  |  | (31,503 | ) |  | 33.96 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nonvested at December 31, 2015 |  |  | 19,226 |  | $ | 29.59 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(1) | Includes vested units of 3,131 that were withheld to cover tax obligations and were subsequently canceled. As a result of this transaction, additional paid-in capital decreased by $107,000.

X
- Definition Tabular disclosure of information related to dividends declared, including paid and unpaid dividends. + References No definition available. + Details
Name: | us-gaap_DividendsDeclaredTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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
- References No definition available. + Details
Name: | us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration