Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 77,052	$ 75,497	[1]
Short-term investments	34,363	6,541	[1]
Accounts receivable, net	49,189	47,710	[1]
Inventories	68,748	66,964	[1]
Deferred tax assets	4,247	8,940	[1]
Other current assets	15,621	12,264	[1]
Total current assets	249,220	217,916	[1]
Property, equipment and leasehold improvements, net	36,595	29,286	[1]
Purchased intangible assets, net	7,433	8,226	[1]
Goodwill	9,178	9,178	[1]
Deferred tax assets	8,673	13,588	[1]
Other assets	20,918	38,877	[1]
Total assets	332,017	317,071	[1]
Current liabilities:
Accounts payable	46,408	44,705	[1]
Accrued compensation and benefits	6,220	9,420	[1]
Accrued expenses	5,712	11,133	[1]
Current portion of long-term debt	195	0	[1]
Total current liabilities	58,535	65,258	[1]
Long-term debt	4,631	0	[1]
Other long-term liabilities	5,287	5,478	[1]
Total liabilities	68,453	70,736	[1]
Commitments and contingencies			[1]
Stockholders’ equity:
Common stock	3	3	[1]
Additional paid-in capital	334,986	330,473	[1]
Accumulated deficit	(84,260)	(90,046)	[1]
Accumulated other comprehensive income	9,347	2,399	[1]
Total ISSI stockholders’ equity	260,076	242,829	[1]
Noncontrolling interest	3,488	3,506	[1]
Total stockholders’ equity	263,564	246,335	[1]
Total liabilities and stockholders’ equity	$ 332,017	$ 317,071	[1]

[1] Derived from audited financial statements.