XML
48
R37.htm
IDEA: XBRL DOCUMENT
v3.5.0.2
Operating Segments - Narrative (Detail)
Sep. 30, 2016
nonconsolidated_partner_company
Segment Reporting [Abstract]
Non-consolidated partner companies
28
X
- Definition
Partner Companies Not Consolidated In Financial Statements.
+ References
No definition available.
+ Details
Name:
sfe_PartnerCompaniesNotConsolidatedInFinancialStatements
Namespace Prefix:
sfe_
Data Type:
xbrli:integerItemType
Balance Type:
na
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_SegmentReportingAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration