XML 43 R47.htm IDEA: XBRL DOCUMENT v3.20.1

Transactions with Related Parties, Sale of Vessel (Details) - Asset under Construction $ in Thousands	Dec. 31, 2016 USD ($)
Property, Plant and Equipment [Line Items]
Remaining commitment for new build	$ 20,510
Fair value of newbuild	$ 24,500

X

- Definition

The fair value of a newbuild vessel representing the higher of the two appraisals obtained from independent third parties.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of the remaining commitment maturing in the remainder of the fiscal years in order to complete a newbuild vessel as of the day of signing the novation agreement.

+ References

No definition available.

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_AssetUnderConstructionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: