CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 35,122	$ 43,010
Restricted cash	49	54
Accounts receivable (net of allowance for doubtful accounts of $725 and $510 at March 31, 2020 and December 31, 2019, respectively)	15,391	22,919
Inventory	1,377	1,545
Deferred sales commissions	10,264	11,558
Prepaid expenses and other current assets	3,905	4,172
Total current assets	66,108	83,258
Deferred sales commissions	7,379	7,682
Property and equipment, net	39,124	39,251
Operating lease right-of-use assets	5,399	5,818
Intangible assets, net	13,936	14,317
Goodwill	48,807	48,958
Other assets	1,855	1,823
Total assets	182,608	201,107
Current liabilities:
Accounts payable	6,831	7,534
Accrued compensation	10,955	9,854
Income tax payable	150	78
Operating lease liabilities	1,425	1,455
Other current liabilities	10,979	13,090
Deferred revenue	105,969	119,851
Total current liabilities	136,309	151,862
Deferred revenue	58,036	57,766
Deferred income taxes	2,635	2,590
Operating lease liabilities	3,831	4,167
Other long-term liabilities	786	914
Total liabilities	201,597	217,299
Commitments and contingencies (Note 11)
Stockholders' deficit:
Preferred stock, $0.001 par value; 10,000 and 10,000 shares authorized, zero and zero shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively)
Non-designated common stock, $0.00005 par value, 190,000 and 190,000 shares authorized, 25,580 and 25,060 shares issued, and 24,580 and 24,060 shares outstanding, at March 31, 2020 and December 31, 2019, respectively)	2	2
Additional paid-in capital	214,208	210,846
Treasury stock, at cost; 1,000 and 1,000 shares at March 31, 2020 and December 31, 2019, respectively)	(11,435)	(11,435)
Accumulated loss	(218,654)	(212,548)
Accumulated other comprehensive loss	(3,110)	(3,057)
Total stockholders' deficit	(18,989)	(16,192)
Total liabilities and stockholders' deficit	$ 182,608	$ 201,107