Summary of Significant Accounting Policies - Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Numerator:
Basic net income (loss)	$ 117,361	$ (4,466)	$ 118,152	$ (9,474)
Diluted net income (loss)	$ 118,561	$ (4,466)	$ 120,552	$ (9,474)
Denominator:
Basic weighted average shares outstanding	22,402,641	22,005,589	22,396,238	22,000,367
Diluted weighted average shares outstanding	26,648,153	22,005,589	26,614,726	22,000,367
Basic income (loss) per share	$ 5.24	$ (0.20)	$ 5.28	$ (0.43)
Diluted income (loss) per share	$ 4.45	$ (0.20)	$ 4.53	$ (0.43)