Vessels, Net - Additional Information (Details) $ in Thousands	12 Months Ended
Dec. 31, 2025 USD ($) vessel	Dec. 31, 2024 vessel
Property, Plant and Equipment [Abstract]
Number of impaired vessels	0	0
Number of vessels provided as collateral	37
Vessels provided as collateral \| $	$ 870,338
Number of vessels sold and leased back	8
Carrying value of vessels sold and leased back \| $	$ 235,246

The carrying amount, as of the date of the latest financial statement presented, of vessels formerly owned by our respective subsidiaries that had been sold to third parties and taken back on a bareboat charter basis with either an obligation to purchase them back at the end of the respective charter period or an option to buy them during the respective charter period.

No definition available.

Name:	sb_PropertyPlantAndEquipmentForVesselsSoldAndLeasedBack
Namespace Prefix:	sb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant