The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Intangibles, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Intangibles, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Intangibles, net	$ 46,735		$ 46,735		$ 49,261
Intangible assets estimated useful life			12 years
Amortization of intangible assets, 2021	5,100		$ 5,100
Amortization of intangible assets, 2022	5,100		5,100
Amortization of intangible assets, 2023	5,100		5,100
Amortization of intangible assets, 2024	5,100		5,100
Amortization of intangible assets, 2025	5,100		5,100
Finite-lived Intangible Assets [Roll Forward]
Intangibles, gross					49,261
Additions			0
Amortization	(1,263)	$ (1,248)	(2,526)	$ (2,497)
Intangibles, net	46,735		46,735		49,261
Acquired ARIKAYCE R&D
Goodwill and Intangible Assets Disclosure [Abstract]
Intangibles, net	44,864		44,864
Finite-lived Intangible Assets [Roll Forward]
Intangibles, gross					47,289
Additions			0
Amortization			(2,425)
Intangibles, net	44,864		44,864
PARI milestones
Goodwill and Intangible Assets Disclosure [Abstract]
Intangibles, net	1,871		1,871
Finite-lived Intangible Assets [Roll Forward]
Intangibles, gross					$ 1,972
Additions			0
Amortization			(101)
Intangibles, net	$ 1,871		$ 1,871