Preferred Stock - Narrative (Details)		3 Months Ended	6 Months Ended
	May 02, 2017 USD ($)	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2017 USD ($) vacancy individual $ / shares shares
Class of Stock [Line Items]
Issuance costs incurred		$ 16,100,000	$ 16,100,000
Number of individuals to be nominated and elected | individual			2
Number of vacancies to be filled | vacancy			2
Value of the Warrants		2,600,000	$ 2,600,000
Elliott
Class of Stock [Line Items]
Proceeds from issue and sale of preferred stock and issued warrants	$ 540,500,000
Period to enter into asset based lending facility			90 days
Daily payment from the closing date until the Refinancing Date			$ 33,333.33
Preferred stock
Class of Stock [Line Items]
Increase in fair value of preferred stock		$ 8,900,000	$ 8,900,000
Common stock
Class of Stock [Line Items]
Term of warrants			8 years
Exercise price (in dollars per share) | $ / shares		$ 0.01	$ 0.01
Common stock
Class of Stock [Line Items]
Aggregated shares purchased (in shares) | shares		379,572	379,572
Elliott
Class of Stock [Line Items]
Required equity value (at least) (as a percent)			5.00%
Preferred Stock Director
Class of Stock [Line Items]
Number of individuals to be nominated and elected | individual			1
Observer
Class of Stock [Line Items]
Number of individuals to be nominated and elected | individual			1