| Standard label: | Troubled Debt Restructuring, Debtor, Current Period, Gain (Loss) on Restructuring, Per Share, Net | 
| Name: | us-gaap:TroubledDebtRestructuringDebtorCurrentPeriodGainLossOnRestructuringPerShareNet | 
| Documentation: | Provide the per share amount of gain (loss), after the impact of income taxes, on restructuring of payables (or debt) for all restructuring gains (losses) (in aggregate) during the period. | 
| Object type: | cm:Concept | 
| Data type: | Share (num:perShareItemType) | 
| Period type: | For Period (duration) | 
| Balance type: | (no balance type) | 
| Abstract: | false | 
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:TroubledDebtRestructuringDebtorCurrentPeriodGainLossOnRestructuringPerShareNet | 
| Label | Role | Language | 
| Troubled Debt Restructuring, Debtor, Current Period, Gain (Loss) on Restructuring, Per Share, Net | http://www.xbrl.org/2003/role/label | en-US | 
| Reference | Role | Topic | 
| FASB Accounting Standards Codification 470 60 50 1 (d) | http://fasb.org/us-gaap/role/ref/legacyRef | 470 |