Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Stock-Based Compensation Expense

The following table summarizes stock-based compensation expense:

	Three months ended   September 30,				Nine months ended   September 30,
(in thousands)	2015		2014		2015		2014
Included in cost of revenue:
Cost of subscriptions	$	213	$	192	$	681	$	556
Cost of maintenance	107		161		353		502
Cost of services	449		529		1,685		1,653
Total included in cost of revenue	769		882		2,719		2,711
Included in operating expenses:
Sales and marketing	768		562		2,273		1,621
Research and development	1,145		762		3,309		2,186
General and administrative	3,804		2,242		9,598		5,974
Total included in operating expenses	5,717		3,566		15,180		9,781
Total stock-based compensation expense	$	6,486	$	4,448	$	17,899	$	12,492