Basis of Presentation - Recently Adopted Accounting Standards (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Jan. 01, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Balance Sheet line item:
Long-term debt		$ 254,272		$ 254,272		$ 229,438
Additional paid-in capital		1,071,097		1,071,097		1,116,921
Accumulated deficit		$ (630,716)		$ (630,716)		(681,283)
Income per common share:
Basic income per common share (in dollars per share)		$ 0.30	$ 0.18	$ 0.76	$ 0.36
Diluted earnings per share (in dollars per share)		0.27	$ 0.17	0.70	$ 0.33
ASU 2020-06: Debt
Accounting Changes
Change in Accounting Principle, Accounting Standards Update, Adopted	true
Change in Accounting Principle, Accounting Standards Update, Transition Option Elected	us-gaap:AccountingStandardsUpdate202006CumulativeEffectPeriodOfAdoptionMember
ASU 2020-06: Debt | Cumulative Effect, Period of Adoption, Adjustment
Balance Sheet line item:
Long-term debt						44,260
Additional paid-in capital						(56,801)
Accumulated deficit						12,541
ASU 2020-06: Debt | Cumulative Effect, Period of Adoption, Adjusted Balance
Balance Sheet line item:
Long-term debt						273,698
Additional paid-in capital						1,060,120
Accumulated deficit						$ (668,742)
Income per common share:
Basic income per common share (in dollars per share)		0.30		0.76
Diluted earnings per share (in dollars per share)		0.27		0.70
Under legacy accounting
Income per common share:
Basic income per common share (in dollars per share)		0.25		0.62
Diluted earnings per share (in dollars per share)		0.24		0.57
Difference between adoption of ASU 2020-06 and legacy accounting | ASU 2020-06: Debt
Income per common share:
Basic income per common share (in dollars per share)		0.05		0.14
Diluted earnings per share (in dollars per share)		$ 0.03		$ 0.13