Subsequent Events (Details) - Backstop Agreements - Subsequent Events $ / shares in Units, shares in Thousands, $ in Millions	Apr. 11, 2018 USD ($) $ / shares shares
Subsequent Events
Basis of acquired diluted common stock - warrants rights (as a percent)	0.50%
Strike price of warrants (in dollars per share) | $ / shares	$ 0.01
Drawdown fee (as a percent)	2.75%
Minimum
Subsequent Events
Additional number of shares to be issued to each Backstop Party | shares	219
Maximum
Subsequent Events
Additional number of shares to be issued to each Backstop Party | shares	328
Aggregate number of shares to be issued for as payment of the Drawdown fee | shares	200
York Group | Maximum
Subsequent Events
Purchase value commitment of shares, including warrants | $	$ 23.2
Valinor Group | Maximum
Subsequent Events
Purchase value commitment of shares, including warrants | $	8.0
Halcyon Group | Maximum
Subsequent Events
Purchase value commitment of shares, including warrants | $	$ 3.8