XML 64 R51.htm IDEA: XBRL DOCUMENT v2.4.1.9
FAIR VALUE, Non-recurring Basis (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Assets measured at fair value on a non-recurring basis [Abstract]    
Impaired loans $ 3,338subk_ImpairedLoansFairValueDisclosure $ 3,333subk_ImpairedLoansFairValueDisclosure
Total 3,338us-gaap_OtherAssetsFairValueDisclosure 3,333us-gaap_OtherAssetsFairValueDisclosure
Significant Unobservable Inputs (Level 3) [Member]    
Assets measured at fair value on a non-recurring basis [Abstract]    
Impaired loans 3,338subk_ImpairedLoansFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
3,333subk_ImpairedLoansFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
Total $ 3,338us-gaap_OtherAssetsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
$ 3,333us-gaap_OtherAssetsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember