Condensed Consolidated Balance Sheets (USD $) In Thousands	12 Months Ended	6 Months Ended
	Mar. 31, 2010	Sep. 30, 2010 Restated [Member]
ASSETS
Cash and cash equivalents	$ 87,594	$ 52,615
Marketable securities	54,469	69,218
Accounts receivable, net	62,203	92,556
Inventory	35,858	46,058
Prepaid expenses and other current assets	15,381	21,136
Restricted cash	5,713	5,484
Deferred tax assets	1,776	3,839
Total current assets	262,994	290,906
Property, plant and equipment, net	64,315	79,970
Goodwill	36,696	47,508
Intangibles, net	7,770	7,966
Marketable securities	7,342	3,900
Deferred tax assets	3,043	4,121
Other assets	18,024	30,506
Total assets	400,184	464,877
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued expenses	84,319	95,994
Deferred revenue	19,970	25,113
Deferred tax liabilities	471	1,580
Total current liabilities	104,760	122,687
Deferred revenue	13,302	16,433
Deferred tax liabilities	777	1,929
Other	380	418
Total liabilities	119,219	141,467
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock	448	456
Additional paid-in capital	698,417	718,411
Accumulated other comprehensive loss	(7,011)	(1,576)
Accumulated deficit	(410,889)	(393,881)
Total stockholders' equity	280,965	323,410
Total liabilities and stockholders' equity	$ 400,184	$ 464,877