CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 22,476	$ 48,203
Accounts receivable, net of allowances of $11,833 and $13,963 at September 30, 2014 and December 31, 2013, respectively	56,011	56,770
Inventories	53,977	60,122
Deferred tax assets, net	497	522
Prepaid expenses	6,573	7,778
Other current assets	15,995	17,493
Total current assets	155,529	190,888
Property and equipment, net	34,414	35,186
Intangible assets, net	2,830	4,260
Long-term deferred tax assets, net	2,272	2,415
Other long-term assets	2,161	2,393
Total assets	197,206	235,142
Current liabilities:
Accounts payable	34,509	33,990
Accrued compensation and benefits	26,701	30,342
Accrued expenses and other current liabilities	31,649	41,273
Income taxes payable	6,032	6,875
Short-term debt	8,000	0
Deferred tax liabilities, net	0	14
Deferred revenues	221,830	211,403
Total current liabilities	328,721	323,897
Long-term deferred tax liabilities, net	536	565
Long-term deferred revenues	195,507	255,429
Other long-term liabilities	13,676	14,586
Total liabilities	538,440	594,477
Contingencies (Note 8)
Stockholders' equity:
Common stock	423	423
Additional paid-in capital	1,044,096	1,043,384
Accumulated deficit	(1,316,729)	(1,336,526)
Treasury stock at cost	(70,855)	(72,543)
Accumulated other comprehensive income	1,831	5,927
Total stockholders' deficit	(341,234)	(359,335)
Total liabilities and stockholders' deficit	$ 197,206	$ 235,142