Performance-Based Common Stock Warrants - Purchase Level and Number of Warrants to Vest (Details) - Supply Commitment - Performance-based warrants	Mar. 09, 2016 USD ($) shares
Class of Warrant or Right [Line Items]
Supply threshold level one, amount | $	$ 260,000,000
Supply threshold level two, amount | $	300,000,000
Supply threshold level three, amount | $	$ 340,000,000
Incremental warrants that will vest, vesting period one, supply threshold level one (in shares)	100,000
Incremental warrants that will vest, vesting period one, supply threshold level two (in shares)	75,000
Incremental warrants that will vest, vesting period one, supply threshold level three (in shares)	75,000
Maximum potential warrants that will vest, vesting period one (in shares)	250,000
Incremental warrants that will vest, vesting period two, supply threshold level one (in shares)	100,000
Incremental warrants that will vest, vesting period two, supply threshold level two (in shares)	75,000
Incremental warrants that will vest, vesting period two, supply threshold level three (in shares)	75,000
Maximum potential warrants that will vest, vesting period two (in shares)	250,000
Incremental warrants that will vest, vesting period three, supply threshold level one (in shares)	75,000
Incremental warrants that will vest, vesting period three, supply threshold level two (in shares)	75,000
Incremental warrants that will vest, vesting period three, supply threshold level three (in shares)	75,000
Maximum potential warrants that will vest, vesting period three (in shares)	225,000