(Non vested options) (Details) - Restricted Stock [Member]	12 Months Ended
	Jan. 01, 2019 $ / shares shares
Awards
Beginning balance (in shares) | shares	328,359
Granted (in shares) | shares	824,251
Vested (in shares) | shares	(197,384)
Forfeited (in shares) | shares	(47,144)
Ending balance (in shares) | shares	908,082
Weighted- Average Grant Date Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 4.52
Granted (in dollars per share) | $ / shares	8.51
Vested (in dollars per share) | $ / shares	6.84
Forfeited (in dollars per share) | $ / shares	10.00
Ending balance (in dollars per share) | $ / shares	$ 10.00