Earnings Loss Per Share - Anti-dilutive Securities (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average securities not included in computation of diluted shares outstanding (in shares)	10,702	35,770	23,026
Shares contingently issuable to Founder Entities as stock dividend to Series A Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average securities not included in computation of diluted shares outstanding (in shares)	0	1,239	10,453
Shares issuable upon conversion of PDH Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average securities not included in computation of diluted shares outstanding (in shares)	0	8,318	8,641
Shares issuable upon conversion of Series A Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average securities not included in computation of diluted shares outstanding (in shares)	2,000	2,000	2,000
Shares issuable upon conversion of Series B Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average securities not included in computation of diluted shares outstanding (in shares)	0	19,443	0
Shares contingently issuable for the contingent consideration
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average securities not included in computation of diluted shares outstanding (in shares)	8,553	4,640	1,503
Shares issuable upon conversion of the 401k exchange rights
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average securities not included in computation of diluted shares outstanding (in shares)	0	0	270
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average securities not included in computation of diluted shares outstanding (in shares)	0	55	89
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average securities not included in computation of diluted shares outstanding (in shares)	147	74	70
Shares issuable under the ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average securities not included in computation of diluted shares outstanding (in shares)	2	1	0