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Fair Value Measurement - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 05, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Redeemable Convertible preferred stock, shares issued		600,000		600,000
Expected volatility rate		40.00%		40.00%
Risk free interest rate		0.47%		0.60%
Expected probability of occurrence		90.00%		90.00%
Mandatory conversion, expected term		9 months		12 months
Net income		$ 55,550	$ 5,501	$ (61,833)
Maximum [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Percentage of closing stock price		10.00%
Estimated net income		$ 42,400
Maximum [Member] \| Volatility Assumption [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Percentage of closing stock price		10.00%
Estimated net income		$ 5,500
Maximum [Member] \| Transaction Occurring Assumption [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Percentage of closing stock price		10.00%
Estimated net income		$ 7,200
Minimum [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Preferred stock liquidation preference per share		$ 10.00
Percentage of closing stock price		10.00%
Estimated net income		$ 47,700
Minimum [Member] \| Volatility Assumption [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Percentage of closing stock price		10.00%
Estimated net income		$ 8,000
Minimum [Member] \| Transaction Occurring Assumption [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Percentage of closing stock price		10.00%
Estimated net income		$ 7,200
Redeemable Convertible Series B Preferred Stock [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Capital	$ 600,000
Redeemable Convertible preferred stock, shares issued	600,000	600,000		600,000
Preferred stock liquidation preference per share	$ 1,000
Preferred stock dividend rate calculated on interest rate	3.00%
Conversion floor price of common stock		$ 1.75
Redeemable Convertible Series B Preferred Stock [Member] \| Maximum [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Common stock value per share		$ 2.25