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Redeemable Convertible Preferred Stock and Shareholders' Deficit - Summary of Aggregate and Per Share Amount (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
1 Months Ended | 12 Months Ended |
|---|---|---|
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Aug. 13, 2013
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Dec. 31, 2012
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| Temporary Equity [Line Items] | ||
| Arrearage total | $ 68,850 | $ 50,549 |
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Series E Redeemable Convertible Preferred Stock [Member]
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| Temporary Equity [Line Items] | ||
| Arrearage total | 14,086 | |
| Arrearage per share | $ 0.37 | |
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Series D Redeemable Convertible Preferred Stock [Member]
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| Temporary Equity [Line Items] | ||
| Arrearage total | 9,411 | |
| Arrearage per share | $ 0.48 | |
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Series C-3 Redeemable Convertible Preferred Stock [Member]
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| Temporary Equity [Line Items] | ||
| Arrearage total | 4,819 | |
| Arrearage per share | $ 0.36 | |
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Series C-2 Redeemable Convertible Preferred Stock [Member]
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| Temporary Equity [Line Items] | ||
| Arrearage total | 9,614 | |
| Arrearage per share | $ 0.52 | |
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Series C-1 Redeemable Convertible Preferred Stock [Member]
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| Temporary Equity [Line Items] | ||
| Arrearage total | 9,222 | |
| Arrearage per share | $ 0.58 | |
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Series C Redeemable Convertible Preferred Stock [Member]
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| Temporary Equity [Line Items] | ||
| Arrearage total | 2,162 | |
| Arrearage per share | $ 0.48 | |
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Series B-1 Redeemable Convertible Preferred Stock [Member]
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| Temporary Equity [Line Items] | ||
| Arrearage total | 380 | |
| Arrearage per share | $ 0.31 | |
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Series B Redeemable Convertible Preferred Stock [Member]
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| Temporary Equity [Line Items] | ||
| Arrearage total | 209 | |
| Arrearage per share | $ 0.30 | |
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Series A Redeemable Convertible Preferred Stock [Member]
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| Temporary Equity [Line Items] | ||
| Arrearage total | $ 556 | |
| Arrearage per share | $ 0.78 |