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Net Income (Loss) Per Share - Schedule of Outstanding Securities (Detail)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding securities having potential to dilute basic EPS	1,400,000
Outstanding Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding securities having potential to dilute basic EPS		3,875,153
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding securities having potential to dilute basic EPS		565,148

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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