|
Stock-based Compensation Plans and Awards - Schedule of shares available for grant and activity (Details)
|
12 Months Ended |
|---|---|
|
Dec. 31, 2014
|
|
| Shares Available for Grant | |
| Balance at the beginning of the period (in shares) | 9,048,200us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant |
| Additional shares authorized (in shares) | 11,815,837us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized |
| Options granted (in shares) | (349,500)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross |
| ESPP shares issued (in shares) | (142,265)us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans |
| Options forfeited (in shares) | 1,639,935us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares |
| Balance at the end of the period (in shares) | 18,184,195us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant |
| Equity Awards | |
| Shares Available for Grant | |
| Balance at the beginning of the period (in shares) |
9,048,200us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = p_EquityAwardsMember |
| Additional shares authorized (in shares) |
7,815,837us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized / us-gaap_PlanNameAxis = p_EquityAwardsMember |
| Options granted (in shares) |
(349,500)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_PlanNameAxis = p_EquityAwardsMember |
| Options forfeited (in shares) |
1,639,935us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares / us-gaap_PlanNameAxis = p_EquityAwardsMember |
| Balance at the end of the period (in shares) |
14,326,460us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = p_EquityAwardsMember |
| ESPP | |
| Shares Available for Grant | |
| Additional shares authorized (in shares) |
4,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized / us-gaap_PlanNameAxis = p_EmployeeStockPurchasePlanMember |
| ESPP shares issued (in shares) |
(142,265)us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_PlanNameAxis = p_EmployeeStockPurchasePlanMember |
| Balance at the end of the period (in shares) |
3,857,735us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = p_EmployeeStockPurchasePlanMember |
| Restricted Stock | |
| Shares Available for Grant | |
| Restricted stock granted (in shares) |
(4,909,360)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
| Restricted stock forfeited (in shares) |
1,081,348us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
| Restricted Stock | Equity Awards | |
| Shares Available for Grant | |
| Restricted stock granted (in shares) |
(4,909,360)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_PlanNameAxis = p_EquityAwardsMember |
| Restricted stock forfeited (in shares) |
1,081,348us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_PlanNameAxis = p_EquityAwardsMember |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of additional shares authorized for issuance under an established share-based compensation plan. No definition available.
|
| X | ||||||||||
|
- Definition
The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Gross number of share options (or share units) granted during the period. No definition available.
|
| X | ||||||||||
|
- Definition
Number of non-vested options forfeited. No definition available.
|
| X | ||||||||||
|
- Definition
Number of shares issued during the period as a result of an employee stock purchase plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Details
|