Unaudited Quarterly Results of Operations (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

The following tables set forth selected unaudited quarterly consolidated statement of operations data for each of the quarters indicated as well as the percentage of total revenue for each line item shown. The unaudited information should be read in conjunction with our financial statements and related notes included elsewhere in this report. We believe that the following unaudited information reflects all normal recurring adjustments necessary for a fair presentation of the information for the periods presented. The operating results for any quarter are not necessarily indicative of results for any future period.

	Three months ended
	Dec 31, 2015			Sept 30, 2015			Jun 30, 2015			Mar 31, 2015			Dec 31, 2014			Sept 30, 2014			Jun 30, 2014			Mar 31, 2014
	(in thousands)
Revenue
Subscription and support	$	32,102		$	29,832		$	28,085		$	26,269		$	25,011		$	23,690		$	21,968		$	20,648
Professional services	7,780			6,436			5,883			8,885			5,118			4,229			4,546			7,484
Total revenue	39,882			36,268			33,968			35,154			30,129			27,919			26,514			28,132
Cost of revenue
Subscription and support	5,791			5,319			5,564			5,885			6,097			5,387			5,029			4,669
Professional services	5,222			4,457			4,189			3,777			3,864			3,152			2,882			2,798
Total cost of revenue	11,013			9,776			9,753			9,662			9,961			8,539			7,911			7,467
Gross profit	28,869			26,492			24,215			25,492			20,168			19,380			18,603			20,665
Operating expenses
Research and development	13,496			12,766			12,196			12,008			11,911			11,175			10,772			10,287
Sales and marketing	18,632			20,903			16,329			13,705			14,063			16,248			12,747			10,440
General and administrative	8,538			7,153			6,291			6,734			5,797			4,572			5,186			4,228
Total operating expenses	40,666			40,822			34,816			32,447			31,771			31,995			28,705			24,955
Loss from operations	(11,797		)	(14,330		)	(10,601		)	(6,955		)	(11,603		)	(12,615		)	(10,102		)	(4,290		)
Interest expense	(508		)	(494		)	(513		)	(510		)	(763		)	(700		)	(316		)	(265		)
Other income and (expense), net (1)	2,014			163			191			(66		)	(259		)	(67		)	(145		)	3
Loss before provision for income taxes	(10,291		)	(14,661		)	(10,923		)	(7,531		)	(12,625		)	(13,382		)	(10,563		)	(4,552		)
Provision (benefit) for income taxes	2			(31		)	106			(84		)	32			—			—			—
Net loss	$	(10,293	)	$	(14,630	)	$	(11,029	)	$	(7,447	)	$	(12,657	)	$	(13,382	)	$	(10,563	)	$	(4,552	)

(1) During December 2015, we resolved all contingencies associated with a government grant agreement resulting in higher government grant income recorded to “Other income and (expense), net” (see Note 5).