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Property and Equipment (Notes)
 12 Months Ended
Dec. 31, 2016
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
 
2016
 
2015
Land and building
 
 
$
767

 
$
767

Leasehold improvements
 
 
79,165

 
76,844

Machinery and equipment
10 years
 
11,112

 
8,557

Furniture and fixtures
5 years
 
8,881

 
7,769

Computer equipment and software
3 to 5 years
 
57,855

 
50,861

 
 
 
157,780

 
144,798

Less accumulated depreciation and amortization
 
 
(85,399
)
 
(72,788
)
Property and equipment - net
 
 
$
72,381

 
$
72,010



Depreciation and amortization expense related to property and equipment included in operating expenses amounted to approximately $14,346 in 2016, $13,237 in 2015 and $11,139 in 2014.