Convertible Senior Notes - Narratives (Details) $ / shares in Units, $ in Thousands				1 Months Ended				2 Months Ended	3 Months Ended		12 Months Ended
	Jan. 07, 2021 USD ($) shares	Jun. 05, 2020	May 18, 2020 USD ($) D $ / shares shares	Nov. 30, 2020 $ / shares shares	Aug. 31, 2020 $ / shares shares	May 31, 2020 USD ($)	Sep. 30, 2019 USD ($) shares	Feb. 28, 2021 shares	Mar. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($)	Dec. 30, 2022 $ / shares	May 29, 2020 USD ($)	Mar. 31, 2018 USD ($)
Convertible Senior Notes
Net proceeds											$ 122,886	$ 108,925	$ 65,259
Aggregate consideration													90,238
Conversion of convertible senior notes to common stock												15,345	62,553
Long-term borrowings											9,000
Convertible senior notes											193,900
Convertible senior note													1,179
Proceeds from issuance of convertible senior notes, net													205,098
Carrying amount of the liability component											11,400
Gain/(loss) on extinguishment of debt											$ (986)		$ 17,686
Closing stock price on grant date | $ / shares				$ 22.25	$ 10.25
Common stock shares issued | shares				43,700,000	35,276,250			32,200,000
Minimum
Convertible Senior Notes
Effective interest rate (as a percent)											2.20%
Maximum
Convertible Senior Notes
Effective interest rate (as a percent)											8.30%
3.75% Convertible Senior Notes
Convertible Senior Notes
Principal amount			$ 200,000			$ 212,463			$ 15,200		$ 197,278	$ 197,278			$ 12,500
Interest rate (as a percent)			3.75%			3.75%			3.75%	3.75%	3.75%	3.75%	3.75%		3.75%
Net proceeds						$ 189,219
Conversion of notes through common stock issuance | shares									3,016,036		0	3,000,000.0
Conversion of convertible senior notes to common stock												$ 15,200
Maturity principal amount			$ 1
Conversion rates for the notes (in shares)			198.6196
Conversion price, per share | $ / shares			$ 5.03
Trading days | D			20
Consecutive trading days | D			30
Conversion price (as a percent)			130.00%
Number of business days			5 days
Number of consecutive trading days			5 days
Principal amount (as a percent)			98.00%
Percentage of principal amount to be redeemed			100.00%
Effective interest rate (as a percent)											4.50%	4.50%
Transaction costs for issuance			$ 7,000
Initial purchasers' discount			6,400			6,374
Other issuance costs			$ 600			$ 617
Closing stock price on grant date | $ / shares														$ 12.37
Fair value of convertible senior notes											$ 493,000
3.75% Convertible Senior Notes | Minimum
Convertible Senior Notes
Redemption notice days			1 day
3.75% Convertible Senior Notes | Maximum
Convertible Senior Notes
Redemption notice days			3 days
7.5% Convertible Senior Note
Convertible Senior Notes
Principal amount							$ 40,000
Interest rate (as a percent)							7.50%			7.50%			7.50%
Conversion of notes through common stock issuance | shares							16,000,000.0
5.5% Convertible Senior Notes
Convertible Senior Notes
Principal amount	$ 160									$ 33,500			$ 33,500			$ 100,000
Interest rate (as a percent)	5.50%	5.50%	5.50%			5.50%				5.50%		5.50%	5.50%			5.50%
Repurchase of convertible senior notes | shares			9,400,000
Aggregate repurchase of debt			$ 128,900
Aggregate consideration			90,200
Conversion of notes through common stock issuance | shares	69,808									14,600,000
Maturity principal amount			66,300
Gain on early debt extinguishment			$ 13,200
Percentage of principal amount to be redeemed		100.00%
Gain/(loss) on extinguishment of debt										$ 4,500