 | us-gaap:DebtSecuritiesHeldToMaturityMaturityAllocationExtensibleList | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities |
 | us-gaap:HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmountAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities |
 | us-gaap:HeldToMaturitySecuritiesDebtMaturitiesFairValueAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities |
 | us-gaap:HeldtomaturitySecuritiesDebtMaturitiesAmortizedCostRollingMaturityAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities |
 | us-gaap:HeldToMaturitySecuritiesDebtMaturitiesRemainderOfFiscalYearFairValue | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities |
 | us-gaap:HeldToMaturitySecuritiesDebtMaturitiesFairValueRollingMaturityAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities |
 | us-gaap:HeldtomaturitySecuritiesDebtMaturitiesDate | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities |
 | us-gaap:DebtSecuritiesHeldToMaturityMaturityWeightedAverageYieldAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities |
 | us-gaap:DebtSecuritiesHeldToMaturityRollingMaturityWeightedAverageYieldAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities |
 | us-gaap:DebtSecuritiesHeldToMaturityMaturityAllocationExtensibleList | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable |
 | us-gaap:HeldToMaturitySecuritiesDebtMaturitiesNetCarryingAmountAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable |
 | us-gaap:HeldToMaturitySecuritiesDebtMaturitiesFairValueAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable |
 | us-gaap:HeldtomaturitySecuritiesDebtMaturitiesAmortizedCostRollingMaturityAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable |
 | us-gaap:HeldToMaturitySecuritiesDebtMaturitiesRemainderOfFiscalYearFairValue | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable |
 | us-gaap:HeldToMaturitySecuritiesDebtMaturitiesFairValueRollingMaturityAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable |
 | us-gaap:HeldtomaturitySecuritiesDebtMaturitiesDate | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable |
 | us-gaap:DebtSecuritiesHeldToMaturityMaturityWeightedAverageYieldAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable |
 | us-gaap:DebtSecuritiesHeldToMaturityRollingMaturityWeightedAverageYieldAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable |