Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment, Net (Details)

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Property and Equipment, Net (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Property and equipment, net    
Property and Equipment, Gross $ 46,654 $ 47,611
Accumulated depreciation and amortization (25,124) (24,316)
Total 21,530 23,295
Land [Member]
   
Property and equipment, net    
Property and Equipment, Gross 4,023 4,152
Buildings [Member]
   
Property and equipment, net    
Property and Equipment, Gross 9,490 10,269
Leasehold improvements [Member]
   
Property and equipment, net    
Property and Equipment, Gross 2,795 2,789
Office furniture and equipment [Member]
   
Property and equipment, net    
Property and Equipment, Gross 10,920 10,719
Computer software and hardware [Member]
   
Property and equipment, net    
Property and Equipment, Gross 9,869 9,362
Demonstration and loaned equipment [Member]
   
Property and equipment, net    
Property and Equipment, Gross $ 9,557 $ 10,320