CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 38,284	$ 47,315
Short-term investments	42,465	51,814
Trade accounts receivable, net of allowances	25,287	22,511
Deferred costs, current portion	852	460
Prepaid expenses and other current assets	5,166	7,140
Total current assets	112,054	129,240
Equipment, software, and leasehold improvements, at cost:
Equipment and software	57,014	66,702
Leasehold improvements	3,204	3,122
Total equipment, software, and leasehold improvements, at cost	60,218	69,824
Less accumulated depreciation and amortization	54,339	61,024
Net equipment, software, and leasehold improvements	5,879	8,800
Restricted cash equivalents and investments	2,700	2,890
Available for sale securities	2,041	1,721
Other assets	1,908	2,307
Deferred costs, non-current portion	1,236	212
Deferred tax assets, net	1,015
Deferred tax assets, net		957
Other intangible assets, net	1,224	2,136
Goodwill	12,974	13,080
Total assets	141,031	161,343
Current liabilities:
Accounts payable	18,379	17,050
Accrued and other current liabilities	16,547	17,320
Deferred revenue, current portion	3,883	3,497
Total current liabilities	38,809	37,867
Deferred revenue, non-current portion	343	105
Deferred rent	504	620
Deferred tax liabilities, net	100
Deferred tax liabilities, net		88
Other long-term liabilities	1,935	1,980
Total liabilities	41,691	40,660
Commitments and contingencies
Preferred stock, $0.001 par value, no shares issued and outstanding:
Common stock, $0.001 par value authorized 250,000 shares; issued and outstanding 36,829 shares in 2016 and 36,298 shares in 2015	37	36
Additional paid-in capital	631,824	627,316
Accumulated other comprehensive loss	(58,758)	(59,480)
Retained deficit	(473,763)	(447,189)
Total shareholders’ equity	99,340	120,683
Total liabilities and shareholders’ equity	141,031	161,343
Preferred stock, Series A
Preferred stock, $0.001 par value, no shares issued and outstanding:
Preferred stock	0	0
Preferred stock, Undesignated series
Preferred stock, $0.001 par value, no shares issued and outstanding:
Preferred stock	$ 0	$ 0