Debt - Additional Information (Details) $ / shares in Units, € in Millions			9 Months Ended	12 Months Ended
	Sep. 17, 2020 USD ($) shares	Dec. 24, 2019 USD ($) TradingDay	Sep. 30, 2020 USD ($)	Dec. 31, 2022 USD ($) Loan $ / shares shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2022 EUR (€) shares	Jul. 31, 2022 USD ($)	Apr. 18, 2016 USD ($)	Apr. 18, 2016 EUR (€)	Jun. 17, 2014 USD ($)
Debt Instrument [Line Items]
Cash payment made for exchange of notes		$ 200
Aggregate payment on debt exchange		55,200,000			$ 69,000,000
Reverse stock split, description						1-for-6 reverse stock split
Gain on extinguishment of debt				$ 27,142,000			$ 55,100,000
Adjusted equity component of convertible notes exchange				$ 38,400,000
Common stock, Authorized shares | shares	61,666,666			61,666,666	61,666,666	61,666,666	13,333,333	61,666,666
Derivative liability reclassified to equity	$ 18,300,000
Income tax effects on equity transactions			$ 4,400,000	$ 4,400,000
Interest expense				30,200,000	$ 30,035,000
Letters of Credit
Debt Instrument [Line Items]
Restricted Cash and Cash Equivalents				$ 300,000
Research and development loans
Debt Instrument [Line Items]
Principal					0
Fair value of debt										$ 2,900,000	€ 2.6
Finland's Ministry of Finance | Research and development loans
Debt Instrument [Line Items]
Loan repayment ending period				2021-01
Non-Convertible Capital Loan
Debt Instrument [Line Items]
Fair value of debt				$ 20,500,000				€ 18.2
Number of loans | Loan				14
Non-Convertible Capital Loan | Finland's Ministry of Finance
Debt Instrument [Line Items]
Residual payment amount									$ 100,000
Convertible Senior Notes due 2021
Debt Instrument [Line Items]
Principal amount of debt exchanged		$ 276,000,000.0
Interest rate (as a percent)		1.75%										1.75%
Principal amount denomination for debt conversion		$ 1,000
Principal												$ 345,000,000
Debt instrument, principal amount outstanding		$ 69,000,000.0		$ 69,000,000.0
Interest expense				0	1,457,000
Convertible Senior Secured Notes due 2024
Debt Instrument [Line Items]
Interest rate (as a percent)		6.00%					6.00%
Principal amount of debt issued for exchange		$ 750
Principal		$ 207,000,000.0
Debt instrument, principal amount outstanding				$ 207,000,000	207,000,000
Notes maturity date		Dec. 01, 2024
Interest payment in shares, percentage of daily volume-weighted average price		95.00%
Notes frequency of periodic payment						semi-annually in arrears
Interest in shares of common stock, threshold trading days | TradingDay		10
Initial conversion rate of common stock				47.6190
Initial conversion price of convertible notes into common stock (in dollars per share) | $ / shares				$ 21.00
Principal amount of Notes or an integral multiple thereof in which holder may repurchase the Notes				$ 1,000
Reverse stock split, description				1-for-6
Debt instrument conversion threshold stock price percentage		130.00%
Debt repurchase price percentage on principal amount		100.00%
Debt default, nonpayment of interest, period		30 days
Debt default, failure to convert notes, period		5 days
Debt default, non-compliance with covenants, period		60 days
Fair value of derivative liability		$ 59,400,000		$ (0)	37,000
Debt discount		$ 75,100,000
Interest expense				28,427,000	$ 25,826,000
Effective interest rate on liability component (as a percent)		18.13%
Debt fair value amount				157,300,000
Debt Issuance Costs, Gross				$ 5,700,000
Convertible Senior Secured Notes due 2024 | Minimum
Debt Instrument [Line Items]
Debt default, non-payment of outstanding principal		$ 30,000,000.0
Debt default, failure to pay final judgements		$ 30,000,000.0
Debt default, percentage of principal outstanding required for immediate payment		25.00%