Capitalized software - Schedule of Components of Capitalized Software (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
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Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2015 |
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| Capitalized Computer Software, Net [Abstract] | |||
| Capitalized software | $ 88,627 | $ 80,646 | |
| Less: Accumulated amortization | (61,879) | (50,507) | |
| Total Capitalized software, net | 26,748 | 30,139 | |
| Capitalized software amortization expense | $ 10,600 | $ 9,200 | $ 9,900 |
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- Definition For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of expense for amortization of capitalized computer software costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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