Submission type N-CSR should have a non-empty value for oef:ClassName in the context From2025-01-01to2025-12-31_C000016960Member_WithoutSalesLoadMember.
WARNING
Submission type N-CSR should have a non-empty value for oef:ClassName in the context From2025-01-01to2025-12-31_C000016958Member_WithoutSalesLoadMember.
WARNING
Submission type N-CSR should have a non-empty value for oef:ClassName in the context From2025-01-01to2025-12-31_C000016961Member_WithoutSalesLoadMember.
WARNING
Submission type N-CSR should have a non-empty value for oef:ClassName in the context From2025-01-01to2025-12-31_C000016959Member_WithoutSalesLoadMember.
What are possible issues?
What are possible issues?
Indicate areas of interest as to the quality of an XBRL formatted filing, and in some cases reveal opportunities for improvement of the XBRL filing.