Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 183,931	$ 179,120
Accounts receivable, net of allowance for doubtful accounts of $5,155 (2012) and $3,019 (2011)	69,750	51,195
Inventories, net of reserves of $3,824 (2012) and $2,542 (2011)	41,281	25,283
Prepaid expenses and other current assets	2,570	2,241
Current deferred income taxes	3,969	3,528
Restricted cash	13	13
Total current assets	301,514	261,380
Property and equipment, net	34,187	29,594
Intangible assets, net	96,902	54,040
Goodwill	220,465	107,651
Long term deferred income taxes	636	3,195
Other assets, net	6,814	7,114
Total assets	660,518	462,974
Current liabilities:
Current portion of capitalized lease obligations	159	163
Accounts payable	26,730	25,911
Accrued and other liabilities	33,636	16,816
Customer deposits	2,755	3,398
Deferred revenue	15,935	12,735
Total current liabilities	79,215	59,023
Long-term portion of capitalized lease obligations	7,494	7,609
Convertible senior notes, net	123,561	131,107
Deferred income tax liability	22,091	3,666
Other liabilities	11,667	6,781
Total liabilities	244,028	208,186
Commitments and Contingencies
Stockholders' equity:
Preferred Stock, authorized 5,000 shares, none issued
Common stock, $0.001 par value, authorized 120,000 shares; 57,376 (2012) and 50,975 (2011) issued	57	51
Additional paid-in capital	408,031	274,542
Treasury stock, at cost: 343 (2012) and 324 shares (2011)	(228)	(214)
Accumulated earnings (deficit)	5,498	(22,531)
Accumulated other comprehensive income	3,132	2,940
Total stockholders' equity	416,490	254,788
Total liabilities and stockholders' equity	$ 660,518	$ 462,974