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Property and Equipment (Notes)
 12 Months Ended
Dec. 31, 2015
Property and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
Property and Equipment
The major classes of assets and total accumulated depreciation and amortization are as follows:
 
 
 
December 31,
 
Average Useful Life
 
2015
 
2014
Land and building
 
 
$
767

 
$
767

Leasehold improvements
 
 
76,844

 
71,267

Machinery and equipment
10 years
 
8,557

 
8,071

Furniture and fixtures
5 years
 
7,769

 
7,257

Computer equipment and software
3 to 5 years
 
50,861

 
45,177

 
 
 
144,798

 
132,539

Less accumulated depreciation and amortization
 
 
(72,788
)
 
(63,634
)
Property and equipment - net
 
 
$
72,010

 
$
68,905



Depreciation and amortization expense related to property and equipment included in operating expenses amounted to approximately $13,237 in 2015, $11,139 in 2014 and $8,858 in 2013.