Post-effective amendment to a registration statement that is not immediately effective upon filing

Property and Equipment (Details)

v3.7.0.1
Property and Equipment (Details) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]      
Total property and equipment, gross   $ 2,039,130 $ 2,173,626
Less accumulated depreciation and amortization   (1,710,881) (1,733,020)
Total property and equipment, net $ 383,534 328,249 440,606
Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Total property and equipment, gross   1,165,076 1,119,295
Furniture And Fixtures [Member]      
Property, Plant and Equipment [Line Items]      
Total property and equipment, gross   112,143 112,143
Leasehold Improvements [Member]      
Property, Plant and Equipment [Line Items]      
Total property and equipment, gross   179,999 179,999
Computer Equipment And Software [Member]      
Property, Plant and Equipment [Line Items]      
Total property and equipment, gross   150,304 135,129
Loaned Systems [Member]      
Property, Plant and Equipment [Line Items]      
Total property and equipment, gross   $ 431,608 $ 627,060