Certain Balance Sheet Items (Tables)

3 Months Ended

Mar. 31, 2013

Certain Balance Sheet Items [Abstract]

Property and equipment consisted of the following (in thousands):



	March 31, 2013			December 31, 2012
Computer software	$	4,334		$	4,292
Leasehold improvements	3,980			3,899
Computer equipment	3,800			3,687
Furniture and fixtures	1,934			1,953
Construction-in-progress	1,982			1,135
Machinery and equipment	94			94
Subtotal	16,124			15,060
Less accumulated depreciation and amortization	(8,329		)	(7,779		)
Property and equipment, net	$	7,795		$	7,281

Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):



	March 31, 2013		December 31, 2012
Rebates and other sales deductions	$	33,252	$	29,235
Sales returns reserve	26,794		26,385
Employee compensation and benefits	18,087		24,900
Royalties	2,928		3,271
Professional fees	3,701		2,163
Other	16,173		18,712
Total accrued liabilities	$	100,935	$	104,666

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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