Composition of Certain Financial Statement Items (Notes)

9 Months Ended

Sep. 30, 2013

Balance Sheet Related Disclosures [Abstract]

Composition of Certain Financial Statement Items

COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS

Inventories

Inventories, net, consisted of the following (in thousands): 

	September 30, 2013		December 31, 2012
Raw materials	$	3,894	$	2,573
Work in process	2,564		1,887
Finished goods	3,550		4,828
	$	10,008	$	9,288

Property and Equipment

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

	September 30, 2013			December 31, 2012
Equipment held for rental or loan	$	41,286		$	40,180
Manufacturing equipment and computers	23,386			22,888
Leasehold improvements	5,381			5,024
Furniture and fixtures	2,395			2,102
Building and improvements	1,276			1,276
Land	270			270
Less: accumulated depreciation and amortization	(47,429		)	(44,734		)
	$	26,565		$	27,006

Accrued Liabilities

Accrued liabilities consisted of the following (in thousands): 

	September 30, 2013			December 31, 2012
Accrued payroll and employee-related expenses	$	8,883		$	9,951
Accrued taxes	1,156			1,003
Deferred rent	1,105			800
Accrued clinical study expense	639			671
Accrued royalties	509			528
Contingent consideration, current portion	500			—
Employee stock purchase plan liability	441			602
Accrued legal costs	307			489
Other accrued expenses	2,696			2,948
Less: long-term portion	(1,106		)	(991		)
Accrued liabilities: current portion	$	15,130		$	16,001