Stockholder's Equity Preferred Stock (Details)	12 Months Ended
	Dec. 31, 2017 Rate shares	Jan. 01, 2017 shares
Class of Stock [Line Items]
Preferred Stock, Shares Issued | shares	100	100
Convertible Preferred Stock, Common Shares Issuable upon Conversion | shares	9,414,580
Board of directors, number of members	2
Minimum [Member]
Class of Stock [Line Items]
Common Stock Ownership | Rate	10.00%
Board of directors, number of members	1
Maximum [Member]
Class of Stock [Line Items]
Common Stock Ownership | Rate	14.50%
Board of directors, number of members	2