Equity Compensation Plans - Additional Information (Details)			1 Months Ended			9 Months Ended	12 Months Ended
	May 02, 2016 shares	Sep. 30, 2014 USD ($) Director	Dec. 31, 2016 USD ($) $ / shares shares	May 31, 2016 USD ($)	Sep. 30, 2014 Director shares	Sep. 30, 2014 USD ($) Director	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares	Dec. 30, 2014 shares	Dec. 31, 2013	Jul. 31, 2013 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant under equity incentive plans			11,596,000				11,596,000	12,267,000
Number of shares granted and outstanding			4,184,000				4,184,000	9,277,000
Stock unit granted and outstanding			7,964,000				7,964,000	930,000
Long-term incentive plan			2,706,000				2,706,000	3,382,000
Share-based award, stock options granted in period							1,640,000
Stock option plan, number of shares granted							9,180,000
Share-based award, stock options exercises in period							2,679,000
Expected dividend yield | $							$ 0
RSUs vested, number of shares							990,000
Income tax benefit related to share-based compensation expense | $							$ 5,500,000	$ 4,800,000
Members of board of directors | Director		2			2	2
Interim CEO [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Incremental stock based compensation expense | $			$ 0
Former chief executive officer
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Incremental stock based compensation expense | $							700,000
Share-based award, stock options accelerated in period	200,000
Director
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense | $						$ 14,800,000
Director | General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense | $		$ 14,800,000
RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of RSUs vested | $							$ 4,800,000	$ 9,000,000
RSUs vested, number of shares										0
Income tax benefit related to share-based compensation expense | $									$ 0
2014 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant under equity incentive plans			11,600,000				11,600,000
Maximum annual increase in shares reserved for issuance			8,800,000				8,800,000
Percentage of outstanding shares of common stock							4.00%
Number of additional shares available for issuance							4,300,000
2014 Equity Incentive Plan | Interim CEO [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based award, stock options granted in period			1,000,000
2014 Equity Incentive Plan | Time Based Condition
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted and outstanding			700,000				700,000
2014 Equity Incentive Plan | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock unit granted and outstanding			6,300,000				6,300,000
2014 Equity Incentive Plan | Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock unit granted and outstanding			1,700,000				1,700,000
2014 Equity Incentive Plan | RSUs | Interim CEO [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option plan, number of shares granted			500,000
2014 Equity Incentive Plan | Minimum | Time Based Condition
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period							3 years
2014 Equity Incentive Plan | Minimum | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period							1 year
2014 Equity Incentive Plan | Minimum | Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period							1 year
2014 Equity Incentive Plan | Maximum | Time Based Condition
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period							4 years
2014 Equity Incentive Plan | Maximum | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period							4 years
2014 Equity Incentive Plan | Maximum | Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period							4 years
Two Thousand And Thirteen Omnibus Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of additional shares available for issuance					0
Share-based award, stock options granted in period							0	0
Share-based award, stock options exercises in period										0
Intrinsic value net of options exercised | $							$ 5,600,000	$ 7,400,000
Fair value of options vested | $							$ 1,600,000	$ 14,800,000	$ 1,000,000
Two Thousand And Thirteen Omnibus Incentive Plan | Time Based Condition
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted | $ / shares			$ 2.15				$ 2.15	$ 9.39	$ 4.69
Two Thousand And Thirteen Omnibus Incentive Plan | Time Based Condition | Share-based Compensation Award, Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period										5 years	5 years
Stock options subject to ratable time-based vesting percentage										33.33%	33.33%
Stock options contractual period										10 years	10 years
Two Thousand And Thirteen Omnibus Incentive Plan | Performance Condition
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted | $ / shares									$ 2.80
Two Thousand And Thirteen Omnibus Incentive Plan | Performance Condition | Share-based Compensation Award, Tranche Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options subject to ratable time-based vesting percentage										66.67%	66.67%
Long Term Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Long-term incentive plan												4,100,000
Long-term incentive plan, number of shares granted in period							1,100,000
Long-term incentive plan, number of shares remained outstanding			2,700,000				2,700,000
Long-term incentive plan, number of shares returned to 2014 Plan			300,000				300,000
Tier II Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period				3 years
Incremental stock based compensation expense | $				$ 1,500,000