Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Summary of Significant Accounting Policies

Schedule of Property Plant and Equipment Useful Lives

Leasehold improvements	5 ‑ 10 years
Software, machinery and equipment	1 ‑ 15 years

Schedule of accrual for loss contracts

The following table shows the roll forward of balances in the accrual for loss contracts, including changes due to the provision (benefit) for loss accrual, releases to service cost of sales and releases due to the provision for warrants (in thousands):

	December 31, 2020		December 31, 2019		December 31, 2018
			(as restated)		(as restated)
Beginning Balance	$	3,702	$	5,345	$	—
Provision (benefit) for Loss Accrual		35,473		(394)		5,345
Released to Service Cost of Sales		(2,348)		(1,249)		—
Released to Provision for Warrants		(12,814)		—		—
Ending Balance	$	24,013	$	3,702	$	5,345

Schedule of carrying amount and estimated fair value of financial instruments

The following table summarizes the carrying amount and estimated fair value of the Company’s financial instruments at December 31, 2020 and 2019 (in thousands):

	Carrying		Fair		Fair Value Measurements
As of December 31, 2020	Amount		Value		Level 1		Level 2		Level 3
Contingent consideration	$	9,760	$	9,760	$	—	$	—	$	9,760
Convertible senior notes		85,640		1,272,766		—		1,272,766		—
Long-term debt		175,402		175,402		—		—		175,402
Finance obligations		181,553		181,553		—		—		181,553
	Carrying		Fair		Fair Value Measurements
As of December 31, 2019	Amount		Value		Level 1		Level 2		Level 3
Convertible senior notes	$	110,431	$	188,775	$	—	$	135,320	$	53,455
Long-term debt		112,169		112,169		—		—		112,169
Finance obligations		144,089		144,089		—		—		144,089