Revenues - Schedule of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues [Abstract]
Time charter revenue	$ 351,006	$ 328,905	$ 198,382
Voyage charter revenue	0	5,578	2,603
Other income	13,044	8,992	5,050
Total	$ 364,050	$ 343,475	$ 206,035

Revenues generated from charterers for the time or voyage charter hire of vessels.Revenues from time charter may also include ballast bonus, which is an amount paid by the charterer for repositioning the vessel at the charterers disposal, and other miscellaneous revenues from vessel operations.

No definition available.

Name:	sb_TimeCharterAndVoyageRevenue
Namespace Prefix:	sb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration