CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 87,830	$ 17,902
Accounts receivable, net of allowances of $8,816 and $9,226 at March 31, 2016 and December 31, 2015, respectively	43,732	58,807
Inventories	51,652	48,073
Prepaid expenses	10,475	6,548
Other current assets	6,029	6,119
Total current assets	199,718	137,449
Property and equipment, net	36,664	35,481
Intangible assets, net	30,494	33,219
Goodwill	32,643	32,643
Long-term deferred tax assets, net	2,070	2,011
Other long-term assets	10,174	7,123
Total assets	311,763	247,926
Current liabilities:
Accounts payable	31,325	45,511
Accrued compensation and benefits	27,974	28,124
Accrued expenses and other current liabilities	36,078	35,354
Income taxes payable	588	1,023
Short-term debt	0	5,000
Deferred revenues	178,959	189,887
Total current liabilities	274,924	304,899
Long-term debt	192,130	95,950
Long-term deferred tax liabilities, net	2,672	3,443
Long-term deferred revenues	129,463	158,495
Other long-term liabilities	16,179	14,711
Total liabilities	$ 615,368	$ 577,498
Contingencies (Note 8)
Stockholders' deficit:
Common stock	$ 423	$ 423
Additional paid-in capital	1,055,358	1,055,838
Accumulated deficit	(1,298,389)	(1,319,318)
Treasury stock at cost	(56,063)	(58,336)
Accumulated other comprehensive loss	(4,934)	(8,179)
Total stockholders' deficit	(303,605)	(329,572)
Total liabilities and stockholders' deficit	$ 311,763	$ 247,926