Stock-Based Compensation Expense (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Stock-Based Compensation Expense by Award Type

The following two tables show stock-based compensation expense by award type and where the stock-based compensation expense is recorded in the Company’s consolidated statements of operations:

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(in thousands)				(in thousands)
Options		1,259	$	1,370	$	2,593	$	2,616
RSUs		17,798		11,370		32,039		19,160
Employee stock purchase plan		618		266		1,089		533
Total stock-based compensation expense	$	19,675	$	13,006	$	35,721	$	22,309

Effect of Stock-Based Compensation on Income by Line Item

Effect of stock-based compensation expense on income by line item:

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(in thousands)				(in thousands)
Cost of revenue, subscription	$	317	$	178	$	594	$	293
Cost of revenue, professional services and other		846		666		1,536		1,115
Research and development		6,111		3,461		10,875		5,903
Sales and marketing		7,937		5,113		14,429		8,874
General and administrative		4,464		3,588		8,287		6,124
Total stock-based compensation expense	$	19,675	$	13,006	$	35,721	$	22,309