Income taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands |
Sep. 30, 2017 |
Sep. 30, 2016 |
|---|---|---|
| Components of deferred tax assets and liabilities | ||
| Costs deductible in future periods | $ 30,794 | $ 27,738 |
| Deferred revenue | 20,703 | 23,469 |
| Stock compensation | 4,976 | 5,085 |
| Net operating loss carryforwards | 360 | 1,291 |
| Amortization of goodwill and intangible assets | (36,100) | (34,484) |
| Capitalized software | (9,197) | (10,126) |
| Accounts receivable - unbilled | (12,953) | (13,810) |
| Property and equipment | (3,924) | (5,517) |
| Prepaid expenses | (3,741) | (1,296) |
| Other | (3,333) | (519) |
| Net deferred tax liabilities | $ (12,415) | $ (8,169) |
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- Definition The current portion of tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising from currently nondeductible expenses, deductible in future periods. No definition available.
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- Definition The current portion of the amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis of unbilled receivables and the basis of unbilled receivables determined in accordance with generally accepted accounting principles. No definition available.
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- References No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. 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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- Definition Amount of deferred tax liability attributable to taxable temporary differences from capitalized software. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from intangible assets including goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses. No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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