Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 46,444	$ 130,225
Available-for-sale investments	254,854	203,480
Accounts receivable, net of allowance of $67 and $62	30,988	48,081
Other receivables	3,295	8,292
Inventories	29,246	28,826
Prepaid expenses and other current assets, net	13,477	9,774
Total current assets	378,304	428,678
Property and equipment, net	15,942	16,108
Goodwill, net	304,658	348,957
Other intangible assets, net	168,919	178,064
Other long-term assets	4,891	6,223
Total assets	872,714	978,030
Current liabilities:
Accounts payable	37,755	61,268
Accrued expenses and other current liabilities	21,505	31,109
Deferred revenue	7,884	7,510
Short-term portion of long-term debt, net	7,914	7,903
Convertible senior notes, net	0	181,583
Total current liabilities	75,058	289,373
Long-term liabilities:
Long-term debt, net	85,835	113,193
Convertible senior notes, net	185,177	0
Deferred tax liability, net	42,963	56,861
Deferred revenue	1,915	1,814
Other long-term liabilities	2,741	2,719
Total long-term liabilities	318,631	174,587
Total liabilities	393,689	463,960
Commitments and contingencies (Note 8)
Stockholders’ equity:
Common stock, par value $.0001-authorized, 900,000 shares; issued and outstanding, 40,882 and 42,083	4	4
Additional paid-in capital	1,467,658	1,466,043
Accumulated deficit	(987,524)	(951,977)
Accumulated other comprehensive loss	(1,113)	0
Total stockholders’ equity	479,025	514,070
Total liabilities and stockholders’ equity	$ 872,714	$ 978,030