Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

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 provision for common stock warrants

The following table summarizes the impact of ASU 2019-08 adoption, as a reduction of revenue, by quarter on  the consolidated statement of operations (in thousands):

	Three months ended
	December 31,		September 30,		June 30,		March 31,
	2019		2019		2019		2019			Total
Warrant expense, pre adoption	$	(2,807)	$	(4,583)	$	(1,483)	$	(4,179)	$	(13,052)
Adjustment		—		3,087		466		2,986		6,539
Warrant expense, post adoption		(2,807)		(1,496)		(1,017)		(1,193)		(6,513)

Summary of impact due to adoption of new accounting pronouncements

The table below summarizes the impact of this initial adoption to the consolidated balance sheet as of January 1, 2018 (in thousands):

Recognition of right of use asset	$	34,416
Decrease in accrued expenses		385
Recognition of finance obligation		(34,161)
Decrease in prepaid expenses and other assets		(3,229)
Decrease in leased property, net of accumulated depreciation		(563)
Increase in accumulated deficit		3,487