| Fair value of financial instrument classified in shareholders' equity measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Value of Instruments Classified in Shareholders' Equity (Deprecated 2019-01-31) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Value of Instruments Classified in Shareholders' Equity, Beginning Balance (Deprecated 2019-01-31) | en-US | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Value of Instruments Classified in Shareholders' Equity, Ending Balance (Deprecated 2019-01-31) | en-US | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |