Bankruptcy Filing (Details) $ in Millions	Mar. 31, 2019 USD ($)	Mar. 18, 2019 USD ($) employee executive	Mar. 14, 2019 subsidiary
Reorganizations [Abstract]
Number of subsidiaries | subsidiary			4
Number of senior executives incentivized to stay under retention plan | executive		7
Potential retention funds available to senior executives if milestone plan metrics reach Threshold	$ 4.2
Potential retention funds available to senior executives if certain milestone plan metrics are achieved		$ 5.6
Potential retention funds available to senior executives if milestone metrics exceed plan		$ 7.0
Number of non-insider employees incentivized to stay under retention plan | employee		61
Potential retention funds available to non-insider employees		$ 3.5
Number of claim holders who must approve the plan of reorganization (percent)	50.00%
Dollar value of claim holders who must approve the plan of reorganization (percent)	33.30%