CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 51,500	$ 57,128
Accounts receivable, net	49,631	50,862
Inventories—short-term portion	54,043	58,059
Deferred tax assets—short-term portion	1,613	767
Prepaid expenses and other current assets	6,567	8,920
Total current assets	163,354	175,736
Property and equipment, net	16,906	18,671
Inventories—long-term portion	6,001	5,972
Goodwill	161,201	161,595
Intangible assets, net	119,814	131,108
Deferred tax assets—long-term portion	368	355
Other long-term assets	10,583	11,074
Total assets	478,227	504,511
Current liabilities:
Accounts payable and accrued liabilities	42,891	45,534
Current portion of long-term debt	4,000	12,750
Deferred revenue—short-term portion	12,681	18,660
Total current liabilities	59,572	76,944
Deferred revenue—long-term portion	2,670	2,824
Convertible notes	105,000	105,000
Term loan—long-term portion	20,950	26,700
Other long-term liabilities	21,182	21,496
Total liabilities	209,374	232,964
Stockholders’ equity:
Common stock	732	723
Additional paid-in capital	776,390	768,149
Accumulated other comprehensive income	8,833	8,392
Accumulated deficit	(517,102)	(505,717)
Total stockholders’ equity	268,853	271,547
Total liabilities and stockholders’ equity	$ 478,227	$ 504,511