3. Balance Sheet Components

Inventories

Inventories as of February 28, 2013 and August 31, 2012 consisted of the following (in thousands):

	February 28, 2013		August 31, 2012
Raw materials	$	2,440	$	2,999
Work in process	3,227		4,065
Finished goods	4,508		5,952
Total	$	10,175	$	13,016

Property, Plant and Equipment

Property, plant and equipment as of February 28, 2013 and August 31, 2012 consisted of the following (in thousands):

	February 28, 2013			August 31, 2012
Buildings and improvements	$	14,636		$	14,501
Machinery and equipment	65,237			64,267
Leasehold improvements	3,172			3,143
Other equipment	2,140			2,249
Construction in progress	2,483			2,546
Total property, plant and equipment	87,668			86,706
Less: Accumulated depreciation, amortization and impairment(1)	(44,286		)	(40,064		)
Property, plant and equipment, net	$	43,382		$	46,642

(1) Includes an impairment charge of $7,507 thousand on certain of the Company’s property, plant and equipment for the year ended August 31, 2012. The impairment charge was primarily related to machinery and equipment used in the manufacturing of LED chips.

Intangible Assets

Intangible assets as of February 28, 2013 and August 31, 2012 consisted of the following (in thousands):

	February 28, 2013
	Weighted Average Amortization Period (Years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Patents and trademarks	16	$	620	$	167	$	453
Acquired technology	4	168		123		45
Customer relationships	5	1,349		427		922
Total		$	2,137	$	717	$	1,420

	August 31, 2012
	Weighted Average Amortization Period (Years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Patents and trademarks	17	$	585	$	146	$	439
Acquired technology	4	167		101		66
Customer relationships	5	1,337		290		1,047
Total		$	2,089	$	537	$	1,552