| Source | Taxonomy Implementation Guide | http://fasb.org/us-gaap/role/tin/resource |
| SourceName | Leases under Topic 842 | http://fasb.org/us-gaap/role/tin/resource |
| pdfURI | https://www.fasb.org/leases_1 | http://fasb.org/us-gaap/role/tin/resource |
| inlineURI | https://xbrl.fasb.org/ix/?doc=../impdocs/LE_TIG/inline_f2017leasesig.htm | http://fasb.org/us-gaap/role/tin/resource |
| Note | Element is intended to be used for each reported period for which amendment from Accounting Standards Update identified in tin-part:Source_ASU_Number is applied. | http://fasb.org/us-gaap/role/tin/transition |
| Source | ASU | http://fasb.org/us-gaap/role/tin/transition |
| SourceName | Leases | http://fasb.org/us-gaap/role/tin/transition |
| Source_ASU_Number | 2016-02 | http://fasb.org/us-gaap/role/tin/transition |
| elementCreationTaxonomyVersion | 2017 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Publisher | FASB | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 842 | http://www.xbrl.org/2003/role/disclosureRef |
| SubTopic | 30 | http://www.xbrl.org/2003/role/disclosureRef |
| Section | 50 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 5 | http://www.xbrl.org/2003/role/disclosureRef |
| Subparagraph | (c) | http://www.xbrl.org/2003/role/disclosureRef |
| URI | https://asc.fasb.org/extlink&oid=124258985&loc=SL77919372-209981 | http://www.xbrl.org/2003/role/disclosureRef |
| Publisher | FASB | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 270 | http://www.xbrl.org/2003/role/disclosureRef |
| SubTopic | 10 | http://www.xbrl.org/2003/role/disclosureRef |
| Section | 50 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 6A | http://www.xbrl.org/2003/role/disclosureRef |
| URI | https://asc.fasb.org/extlink&oid=126900988&loc=SL77927221-108306 | http://www.xbrl.org/2003/role/disclosureRef |