| Deferred tax liability (asset) | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Deferred tax liability (asset) at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Deferred tax liability (asset) at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Net deferred tax liability (asset) | en | http://www.xbrl.org/2009/role/netLabel | http://www.xbrl.org/2003/role/link |
| The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Edasilükkunud tulumaksu kohustis (vara) | et | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Edasilükkunud tulumaksu kohustiste või vara summa. [Viide: edasilükkunud tulumaksu kohustised; edasilükkunud tulumaksu vara] | et | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Edasilükkunud tulumaksu kohustis (vara) perioodi alguses | et | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Edasilükkunud tulumaksu kohustis (vara) perioodi lõpus | et | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Edasilükkunud tulumaksu netokohustis (netovara) | et | http://www.xbrl.org/2009/role/netLabel | http://www.xbrl.org/2003/role/link |