Condensed Consolidated Statements of Shareholders' Equity (Deficit) - USD ($) shares in Thousands, $ in Thousands	Total	Capital Units Class A Units	Capital Units Class B Units	Capital Units Common Units	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Total Shareholders’ Equity (Deficit), SkyWater Technology, Inc.	Non-controlling Interests
Beginning balance (in shares) at Jan. 03, 2021		0	18,000	2,108	0	0
Beginning balance at Jan. 03, 2021	$ (1,584)	$ 0	$ 0	$ 3,767	$ 0	$ 0	$ 0	$ (3,783)	$ (16)	$ (1,568)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unit-based compensation	5			$ 5					5
Other (in shares)				(2)
Distribution to VIE member	(981)									(981)
Net income (loss)	(2,053)							(2,811)	(2,811)	758
Ending balance (in shares) at Apr. 04, 2021		0	18,000	2,106	0	0
Ending balance at Apr. 04, 2021	(4,613)	$ 0	$ 0	$ 3,772	$ 0	$ 0	0	(6,594)	(2,822)	(1,791)
Beginning balance (in shares) at Jan. 02, 2022		0	0	0	0	39,836
Beginning balance at Jan. 02, 2022	59,927	$ 0	$ 0	$ 0	$ 0	$ 398	115,208	(54,479)	61,127	(1,200)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to equity compensation plans (in shares)						69
Issuance of common stock pursuant to equity compensation plans	659					$ 1	658		659
Stock-based compensation	3,007						3,007		3,007
Distribution to VIE member	(337)									(337)
Net income (loss)	(15,747)							(16,606)	(16,606)	859
Ending balance (in shares) at Apr. 03, 2022		0	0	0	0	39,905
Ending balance at Apr. 03, 2022	$ 47,509	$ 0	$ 0	$ 0	$ 0	$ 399	$ 118,873	$ (71,085)	$ 48,187	$ (678)