- DefinitionAmount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).
Reference 1: http://www.xbrl.org/2003/role/disclosureRef
 -Publisher FASB
 -Name Accounting Standards Codification
 -Topic 326
 -SubTopic 20
 -Section 50
 -Paragraph 5
 -Subparagraph (b)
 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447
Reference 2: http://www.xbrl.org/2003/role/disclosureRef
 -Publisher FASB
 -Name Accounting Standards Codification
 -Topic 326
 -SubTopic 20
 -Section 50
 -Paragraph 3B
 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447
Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
 -Publisher FASB
 -Name Accounting Standards Codification
 -Topic 326
 -SubTopic 20
 -Section 45
 -Paragraph 1
 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446
| Name: | us-gaap_DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss | 
| Namespace Prefix: | us-gaap_ | 
| Data Type: | xbrli:monetaryItemType | 
| Balance Type: | debit | 
| Period Type: | instant |