Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents

Cash and cash equivalents by geographic region for the years ended December 31, 2020, and 2019 were as follows:

	Year Ended December 31,
(in thousands)	2020		2019
Americas	$	27,562	$	63,374
EMEA	24,875		$	44,283
APAC	22,573		$	26,008
Total	$	75,010	$	133,665

Schedule of Allowance for Doubtful Accounts

The following presents the changes in the balance of our allowance for doubtful accounts:

Year Ended	Item	Balance at beginning of year		Additions charged to expense		Other		Balance at end of year
2020	Allowance for doubtful accounts	$	8,762	$	457	$	(4,827)	$	4,392
2019	Allowance for doubtful accounts	8,423		1,308		(969)		8,762
2018	Allowance for doubtful accounts	10,258		1,824		(3,659)		8,423

Schedule of Annual Effect of Adoption of Previously Reported Statement of Operations

The following schedule depicts the annual effect of the adoption on our previously reported statements of operations:

	Year Ended December 31,
	2019						2018
	As reported		Change		Revised		As reported		Change		Revised
Revenue:
Products	$	384,577	$	4,760	$	389,337	$	429,215	$	3,885	$	433,100
Services	244,517		2,500		247,017		258,445		—		258,445
Total revenue	629,094		7,260		636,354		687,660		3,885		691,545
Cost of sales:
Products	229,821		4,760		234,581		229,793		3,885		233,678
Services	121,232		—		121,232		133,473		—		133,473
Total cost of sales	351,053		4,760		355,813		363,266		3,885		367,151
Gross profit	278,041		2,500		280,541		324,394		—		324,394
Operating expenses:
Selling, general and administrative	254,355		—		254,355		272,287		—		272,287
Research and development	80,790		2,500		83,290		95,298		—		95,298
Total operating expenses	335,145		2,500		337,645		367,585		—		367,585
Loss from operations	(57,104)		—		(57,104)		(43,191)		—		(43,191)