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Certain Balance Sheet Items
6 Months Ended
Jun. 30, 2013
Certain Balance Sheet Items [Abstract]  
Certain Balance Sheet Items
Certain Balance Sheet Items
Property and equipment consisted of the following (in thousands):
 
 
June 30, 2013
 
December 31, 2012
Computer software
$
5,371

 
$
4,292

Construction-in-progress
4,204

 
1,135

Computer equipment
4,116

 
3,687

Leasehold improvements
3,980

 
3,899

Furniture and fixtures
1,934

 
1,953

Machinery and equipment
78

 
94

Subtotal
19,683

 
15,060

Less accumulated depreciation and amortization
(8,915
)
 
(7,779
)
Property and equipment, net
$
10,768

 
$
7,281


Accrued liabilities consisted of the following (in thousands): 
 
June 30, 2013
 
December 31, 2012
Rebates and other sales deductions
$
31,799

 
$
29,235

Sales returns reserve
24,039

 
26,385

Employee compensation and benefits
17,739

 
24,900

Royalties
3,898

 
3,271

Professional fees
1,660

 
2,163

Other
17,636

 
18,712

Total accrued liabilities
$
96,771

 
$
104,666