Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of Estimated Useful Lives

Estimated useful lives by major asset category are as follows:

Manufacturing equipment	10 years
Laboratory equipment	7 years
Furniture and fixtures	5 years
Software, computer and other equipment	3 years
Leasehold improvements	Lower of estimated useful life or term of lease

Property, plant and equipment, net consists of the following:

(in thousands)	DECEMBER 31,
	2020		2019
Manufacturing equipment	$	21,705	$	18,073
Laboratory equipment	7,948		7,525
Furniture and fixtures	1,681		1,648
Software, computer and other equipment	7,836		7,772
Leasehold improvements	30,178		29,720
Construction-in-progress	1,481		3,892
Property, plant and equipment	70,829		68,630
Less: Accumulated depreciation	(16,569)		(10,483)
Property, plant and equipment, net	$	54,260	$	58,147

Schedule of Computation of Diluted EPS

The potential common stock equivalents that have been excluded from the computation of Diluted EPS consist of the following:

	DECEMBER 31,
	2020	2019	2018
Outstanding stock options	8,588,614	8,425,551	6,935,119
Stock purchase warrants	—	4,500	154,500
Nonvested restricted stock awards	809,527	754,415	572,706
Nonvested restricted stock units	107,182	41,811	—
Total	9,505,323	9,226,277	7,662,325