CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 73,032	$ 90,329
Short-term investments	31,847	80,252
Accounts receivable	74,144	75,052
Inventories	32,747	36,926
Deferred tax assets, short-term	3,375	24,650
Prepaid expenses and other current assets	17,539	21,521
Total current assets	232,684	328,730
Property and equipment, net	27,221	34,945
Goodwill	197,884	198,022
Intangibles, net	10,599	31,119
Other assets	12,130	13,268
Total assets	480,518	606,084
Current liabilities:
Accounts payable	15,318	22,380
Income taxes payable	893	331
Deferred revenues	38,601	27,020
Accrued liabilities	35,118	35,349
Total current liabilities	89,930	85,080
Income taxes payable, long-term	4,969	15,165
Deferred tax liabilities, long-term	3,095	0
Other non-current liabilities	10,711	11,673
Total liabilities	108,705	111,918
Commitments and contingencies (Note 19)
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.001 par value, 150,000 shares authorized; 87,700 and 99,413 shares issued and outstanding at December 31, 2014 and 2013, respectively	88	99
Capital in excess of par value	2,261,952	2,336,275
Accumulated deficit	(1,888,247)	(1,841,999)
Accumulated other comprehensive loss	(1,980)	(209)
Total stockholders’ equity	371,813	494,166
Total liabilities and stockholders’ equity	$ 480,518	$ 606,084