v3.26.1
Earnings Per Common Share - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share [Abstract]
Pre-IPO net income (loss)
$ 0
$ 0
$ 39,888
$ 0
X
- Definition
Net Income (Loss), Pre-IPO
+ References
No definition available.
+ Details
Name:
jan_NetIncomeLossPreIPO
Namespace Prefix:
jan_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
us-gaap_EarningsPerShareAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration