Employee Benefit Plans - Severance Plans - Changes and Components in Accumulated Other Comprehensive Income (Loss) (before tax) (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Changes and Components in Accumulated Other Comprehensive Income (Loss) (before tax):
Accumulated Other Comprehensive Income (Loss) at beginning of year	$ 2,663	$ 2,832
Net change in unrecognized actuarial gain (loss)	419	(169)
Accumulated Other Comprehensive Income (Loss) at end of year	$ 3,082	$ 2,663

The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligation), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost. (Rollforward)

No definition available.

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Namespace Prefix:	kbal_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant