Fair Value Measurements (Schedule of Warrants) (Details) - $ / shares	Oct. 01, 2017	Jan. 01, 2017
Class of Warrant or Right [Line Items]
Number of warrants outstanding (in shares)	83,006
Common Stock Warrants - Issued September 2015
Class of Warrant or Right [Line Items]
Number of warrants outstanding (in shares)	83,006
Exercise price (USD per share)	$ 2.50
Common Stock Warrants - Issued October 2013
Class of Warrant or Right [Line Items]
Number of warrants outstanding (in shares)		38,747.5
Number of warrants issued (in shares)		38,747.5
Exercise price (USD per share)	$ 7.74	$ 7.74
Common Stock Warrants - Issued September 2015
Class of Warrant or Right [Line Items]
Number of warrants outstanding (in shares)		283,004.52
Number of warrants issued (in shares)	83,006	283,004.52
Exercise price (USD per share)		$ 2.50
Common Stock Warrants - Issued February 2016
Class of Warrant or Right [Line Items]
Number of warrants outstanding (in shares)		20,251
Number of warrants issued (in shares)		20,251
Exercise price (USD per share)		$ 4.00
Common Stock Warrants - Issued February 2016
Class of Warrant or Right [Line Items]
Number of warrants outstanding (in shares)		9,000
Number of warrants issued (in shares)		9,000
Exercise price (USD per share)		$ 0.05
Common Stock Warrants - Issued May 2016
Class of Warrant or Right [Line Items]
Number of warrants outstanding (in shares)		126,400
Number of warrants issued (in shares)		126,400
Exercise price (USD per share)		$ 4.00