Significant Accounting Policies - Revenue Recognition (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) item	Jan. 01, 2023 USD ($)	Jan. 02, 2022 USD ($)
Disaggregation of Revenue
Number of performance obligation | item	1
Practical expedient	true
Number of contractual liabilities | item	2
Maximum
Disaggregation of Revenue
Revenue duration period	36 months
Deferred Revenue
Significant changes in the contract liabilities balances
Beginning Balance	$ 69	$ 145	$ 792
Revenue recognized that was included in contract liability balance at the beginning of the period	(69)	(145)	(792)
Increase due to cash received, excluding amounts recognized as revenue during the period	50	69	145
Ending Balance	50	69	145
Stored-Value Cards
Significant changes in the contract liabilities balances
Beginning Balance	10,828	7,240	4,973
Revenue recognized that was included in contract liability balance at the beginning of the period	(4,073)	(3,282)	(1,471)
Increase due to cash received, excluding amounts recognized as revenue during the period	6,387	6,870	3,738
Ending Balance	$ 13,142	$ 10,828	$ 7,240