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Share-based Compensation - Restricted Stock Compensation/Awards (Details) - Restricted Stock - USD ($) $ in Thousands	1 Months Ended						12 Months Ended
	May 31, 2019	May 31, 2018	Apr. 30, 2018	Feb. 28, 2018	Apr. 30, 2017	Feb. 28, 2017	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)						500,000
February, 2017 \| Members of Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)						146,564
Compensation Expense							$ 367	$ 439	$ 360
Unrecognized compensation expense							0	385
February, 2017 \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)						500,000
Compensation Expense							723	1,194	1,112
Unrecognized compensation expense							506	1,230
April 2017 \| Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)					14,980
Compensation Expense							0	0	241
Unrecognized compensation expense							0	0
February, 2018 \| Members of Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)				116,958
Compensation Expense							562	549	0
Unrecognized compensation expense							615	1,176
April, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)			350,000
Compensation Expense							1,120	1,436	0
Unrecognized compensation expense							3,428	6,633
May, 2018 \| Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)		13,800
Compensation Expense							0	285	0
Unrecognized compensation expense							0	0
May, 2019 \| Members of Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)	23,560
Compensation Expense							202	367	0
Unrecognized compensation expense							458	0
May, 2019 \| Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)	10,590
Compensation Expense							285	0	$ 0
Unrecognized compensation expense							$ 0	$ 0