XML 43 R32.htm IDEA: XBRL DOCUMENT v3.4.0.3
Property and equipment (Details) - USD ($)
3 Months Ended 15 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Dec. 31, 2015
Property and equipment        
Total property and equipment, gross $ 5,339,580   $ 5,339,580 $ 5,163,309
Less: Accumulated depreciation and amortization (3,517,603)   (3,517,603) (3,351,690)
Total property and equipment, net 1,821,977   1,821,977 1,811,619
Depreciation and amortization expense 163,126 $ 171,229    
Equipment        
Property and equipment        
Total property and equipment, gross 960,281   $ 960,281 958,175
Equipment | Minimum        
Property and equipment        
Estimated useful life     2 years  
Equipment | Maximum        
Property and equipment        
Estimated useful life     7 years  
Computer hardware        
Property and equipment        
Total property and equipment, gross 3,397,404   $ 3,397,404 3,266,233
Computer hardware | Minimum        
Property and equipment        
Estimated useful life     3 years  
Computer hardware | Maximum        
Property and equipment        
Estimated useful life     5 years  
Furniture and fixtures        
Property and equipment        
Total property and equipment, gross 203,536   $ 203,536 192,565
Furniture and fixtures | Minimum        
Property and equipment        
Estimated useful life     5 years  
Furniture and fixtures | Maximum        
Property and equipment        
Estimated useful life     7 years  
Leasehold improvements        
Property and equipment        
Total property and equipment, gross $ 778,359   $ 778,359 $ 746,336
Leasehold improvements | Minimum        
Property and equipment        
Estimated useful life     3 years  
Leasehold improvements | Maximum        
Property and equipment        
Estimated useful life     10 years