6. Composition of certain financial statement captions

The following tables summarize the main items comprising certain financial statement captions as of November 1, 2014 and February 1, 2014 (in thousands):

Inventory	November 1 , 201 4		February 1 , 201 4
Wafers and other purchased materials	$	9,324	$	10,079
Work-in-process		3,546		1,527
Finished goods		7,239		8,797
Total inventory	$	20,109	$	20,403

Prepaid expenses and other current assets	November 1 , 201 4		February 1 , 201 4
Prepayments for inventory	$	1,680	$	1,670
Note receivable		-		230
Amounts due from seller related to DTV acquisition		-		1,439
Other current assets		4,384		4,730
Total prepaid expenses and other current assets	$	6,064	$	8,069

Software, equipment and leasehold improvements	Estimated Useful Lives (years)			November 1 , 201 4			February 1 , 201 4
Software		2		$	40,834		$	38,563
Equipment	1	to	5		22,282			21,147
Office equipment and furniture		2			8,769			8,806
Leasehold improvements	1	to	6		3,124			3,149
Total					75,009			71,665
Less: Accumulated depreciation and amortization					(52,691	)		(44,576	)
Total software, equipment and leasehold improvements, net				$	22,318		$	27,089

Software, equipment and leasehold improvement depreciation and amortization expense for the three months ended November 1, 2014 and November 2, 2013 was $3.1 million and $1.8 million, respectively, and for the nine months ended November 1, 2014 and November 2, 2013 was $9.2 million and $6.8 million, respectively.

Accrued liabilities	November 1 , 201 4		February 1 , 201 4
Income taxes payable, current portion	$	8,428	$	7,968
Rebates		6,776		3,587
License fees		3,127		1,929
Warranties		854		620
Royalties		1,062		985
Deferred revenue		497		3,001
Settlements		-		150
Other accrued liabilities		2,007		1,573
Total accrued liabilities	$	22,751	$	19,813