Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 53,019	$ 55,580
Short-term investments	54,633	48,972
Accounts receivable — net of allowance for doubtful accounts of $409 and $371 at March 31, 2016 and December 31, 2015, respectively	25,072	25,142
Deferred commission expense	8,453	8,114
Prepaid hosting costs	2,531	3,047
Prepaid expenses and other current assets	8,030	4,899
Total current assets	151,738	145,754
Long-term investments	35,113	40,566
Property and equipment, net	26,897	18,161
Capitalized software development costs, net	5,086	4,655
Restricted cash	381	363
Other assets	928	1,007
Intangible assets, net	76	100
Goodwill	9,773	9,773
Total assets	229,992	220,379
Current liabilities:
Accounts payable	2,674	2,588
Accrued compensation costs	8,920	11,371
Other accrued expenses	14,993	12,313
Capital lease obligations	649	542
Deferred rent	174	86
Deferred revenue	73,262	64,407
Total current liabilities	100,672	91,307
Capital lease obligations, net of current portion	285	277
Deferred rent, net of current portion	7,378	6,345
Deferred revenue, net of current portion	692	732
Other long-term liabilities	13	10
Total liabilities	$ 109,040	$ 98,671
Commitments and contingencies (Note 6)
Stockholders’ equity:
Common stock	$ 35	$ 34
Additional paid-in capital	331,730	322,833
Accumulated other comprehensive loss	(305)	(805)
Accumulated deficit	(210,508)	(200,354)
Total stockholders’ equity	120,952	121,708
Total liabilities and stockholders’ equity	$ 229,992	$ 220,379