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

Property and Equipment - Components of Property and Equipment (Details) (10-K)

v3.8.0.1
Property and Equipment - Components of Property and Equipment (Details) (10-K) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]      
Property and equipment gross   $ 7,800 $ 19,048
Less: accumulated depreciation   (6,911) (16,576)
Property and equipment, net $ 1,372 889 2,472
Manufacturing and Lab Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property and equipment gross   223 7,463
Surgical Instruments [Member]      
Property, Plant and Equipment [Line Items]      
Property and equipment gross   5,269 8,672
Leasehold Improvements [Member]      
Property, Plant and Equipment [Line Items]      
Property and equipment gross   863 1,439
Software and Computer Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property and equipment gross   816 845
Furniture and Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property and equipment gross   $ 629 $ 629