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Property and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Schedule property and equipment [Abstract]      
Property and equipment, gross $ 15,530   $ 12,329
Accumulated depreciation and amortization (6,673)   (5,570)
Total property and equipment, net 8,857   6,759 [1]
Depreciation and related amortization expense 1,343 1,155  
Lasers-in-Service [Member]
     
Schedule property and equipment [Abstract]      
Property and equipment, gross 10,029   7,301
Equipment, Computer Hardware and Software [Member]
     
Schedule property and equipment [Abstract]      
Property and equipment, gross 4,474   4,015
Furniture and Fixtures [Member]
     
Schedule property and equipment [Abstract]      
Property and equipment, gross 628   617
Leasehold Improvements [Member]
     
Schedule property and equipment [Abstract]      
Property and equipment, gross $ 399   $ 396
[1] Restated