Income taxes - Schedule of Net Deferred Tax Position (Details) - USD ($) $ in Thousands |
Sep. 30, 2017 |
Sep. 30, 2016 |
|---|---|---|
| Income Tax Disclosure [Abstract] | ||
| Balance of tax jurisdictions with net deferred tax assets | $ 7,691 | $ 8,644 |
| Balance of tax jurisdictions with net deferred tax liabilities | (20,106) | (16,813) |
| Net deferred tax liabilities | $ (12,415) | $ (8,169) |
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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