Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 119,997	$ 75,497
Short-term investments	21,558	6,541
Accounts receivable, net of allowance for doubtful accounts of $372 in 2013 and $508 in 2012	46,088	47,710
Inventories	68,469	66,964
Deferred tax assets	2,326	8,940
Other current assets	14,602	12,264
Total current assets	273,040	217,916
Property and equipment, net	46,504	29,286
Goodwill	9,178	9,178
Purchased intangible assets, net	6,626	8,226
Deferred tax assets	9,942	13,588
Other assets	16,579	38,877
Total assets	361,869	317,071
Current liabilities:
Accounts payable	50,229	44,705
Accrued compensation and benefits	8,072	9,420
Accrued expenses	7,357	11,133
Current portion of long-term debt	195	0
Total current liabilities	65,853	65,258
Long-term debt	4,534	0
Other long-term liabilities	8,712	5,478
Total liabilities	79,099	70,736
Commitments and contingencies (See Note 16)
Stockholders' equity:
Preferred stock, $0.0001 par value: Authorized shares—5,000 in 2013 and 2012. No shares outstanding	0	0
Common stock, $0.0001 par value: Authorized shares—70,000 in 2013 and 2012. Issued and outstanding shares—29,060 in 2013 and 27,594 in 2012	3	3
Additional paid-in capital	343,947	330,473
Accumulated deficit	(72,498)	(90,046)
Accumulated other comprehensive income	9,121	2,399
Total ISSI stockholders’ equity	280,573	242,829
Noncontrolling interest	2,197	3,506
Total stockholders’ equity	282,770	246,335
Total liabilities and stockholders’ equity	$ 361,869	$ 317,071