Stock-Based Compensation Expense (Tables)

6 Months Ended

Jun. 30, 2017

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,
	2017		2016		2017		2016
	(in thousands)				(in thousands)
Options	$	1,370	$	1,446	$	2,616	$	2,922
RSUs		11,370		6,717		19,160		11,251
Employee stock purchase plan		266		312		533		532
Total stock-based compensation expense	$	13,006	$	8,475	$	22,309	$	14,705

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,
	2017		2016		2017		2016
	(in thousands)				(in thousands)
Cost of revenue, subscription	$	178	$	131	$	293	$	224
Cost of revenue, service		666		477		1,115		800
Research and development		3,461		2,272		5,903		4,030
Sales and marketing		5,113		3,469		8,874		5,895
General and administrative		3,588		2,126		6,124		3,756
Total stock-based compensation expense	$	13,006	$	8,475	$	22,309	$	14,705