| Business Combination - Row 44 Merger Cash Flows (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 3 Months Ended | |
|---|---|---|---|
| Sep. 30, 2014 | Sep. 30, 2013 | Mar. 31, 2013
 Row 44 Merger | |
| Business Acquisition [Line Items] | |||
| Operating cash | $ 8 | ||
| Add: cash held in trust | 189,255 | ||
| Cash paid to acquire assets of Purple | (500) | 0 | (101,286) | 
| Add: cash received from backstop participants | 71,250 | ||
| Net cash received from Row 44 Merger | $ 0 | $ 159,227 | $ 159,227 | 
| X | ||||||||||
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- Definition Cash Acquired from Merger No definition available. 
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- Definition Backstop Payments represent payments made during the execution of the business combination of the Company. No definition available. 
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- Definition Cash Acquired from Merger, Cash Held in Trust No definition available. 
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- Definition Cash Acquired from Merger, Operating Cash No definition available. 
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- Details 
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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