CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 47,717	$ 17,902
Accounts receivable, net of allowances of $8,491 and $9,226 at September 30, 2016 and December 31, 2015, respectively	40,850	58,807
Inventories	55,634	48,073
Prepaid expenses	6,901	6,548
Other current assets	7,104	6,119
Total current assets	158,206	137,449
Property and equipment, net	32,969	35,481
Intangible assets, net	25,245	33,219
Goodwill	32,643	32,643
Long-term deferred tax assets, net	2,028	2,011
Other long-term assets	11,827	7,123
Total assets	262,918	247,926
Current liabilities:
Accounts payable	25,852	45,511
Accrued compensation and benefits	27,439	28,124
Accrued expenses and other current liabilities	33,434	35,354
Income taxes payable	658	1,023
Short-term debt	5,000	5,000
Deferred revenues	157,468	189,887
Total current liabilities	249,851	304,899
Long-term debt	188,301	95,950
Long-term deferred tax liabilities, net	1,367	3,443
Long-term deferred revenues	82,540	158,495
Other long-term liabilities	13,592	14,711
Total liabilities	535,651	577,498
Contingencies (Note 8)
Stockholders' deficit:
Common stock	423	423
Additional paid-in capital	1,043,563	1,055,838
Accumulated deficit	(1,276,369)	(1,319,318)
Treasury stock at cost	(34,784)	(58,336)
Accumulated other comprehensive loss	(5,566)	(8,179)
Total stockholders' deficit	(272,733)	(329,572)
Total liabilities and stockholders' deficit	$ 262,918	$ 247,926