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Business combinations (Details)
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12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 0 Months Ended | 0 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2014
USD ($)
segment
|
Sep. 30, 2013
USD ($)
|
Sep. 30, 2012
USD ($)
|
Sep. 30, 2014
Health Services
USD ($)
|
Sep. 30, 2013
Health Services
USD ($)
|
Sep. 30, 2012
Health Services
USD ($)
|
Sep. 30, 2014
Human Services
USD ($)
|
Sep. 30, 2013
Human Services
USD ($)
|
Sep. 30, 2012
Human Services
USD ($)
|
Jul. 02, 2013
HML
GBP (£)
|
Sep. 30, 2014
HML
USD ($)
|
Jul. 02, 2013
HML
Customer relationships
|
Sep. 30, 2013
HML
Previously reported
USD ($)
|
Sep. 30, 2014
HML
Adjustments
USD ($)
|
Jan. 31, 2014
Australian business
USD ($)
|
Jan. 31, 2014
Australian business
AUD
|
Jan. 31, 2014
Australian business
USD ($)
|
Jan. 31, 2014
Australian business
Customer relationships
|
Jan. 31, 2014
Australian business
Customer relationships
USD ($)
|
Apr. 30, 2012
Policy Studies, Inc
USD ($)
|
Sep. 30, 2014
Policy Studies, Inc
Previously reported
USD ($)
|
Sep. 30, 2014
Policy Studies, Inc
Previously reported
Health Services
USD ($)
|
Sep. 30, 2014
Policy Studies, Inc
Previously reported
Human Services
USD ($)
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| Business combinations | |||||||||||||||||||||||
| Share capital acquired (as a percent) | 100.00% | 100.00% | |||||||||||||||||||||
| Preliminary Purchase Price Accounting | |||||||||||||||||||||||
| Cash consideration, net of cash acquired | $ 2,670,000 | $ 71,435,000 | $ 66,003,000 | £ 46,900,000 | $ 71,435,000 | $ 71,435,000 | $ 63,400,000 | ||||||||||||||||
| Stock consideration | 4,200,000 | 6,425,000 | 6,425,000 | ||||||||||||||||||||
| Stock consideration (in shares) | 202,972 | ||||||||||||||||||||||
| Purchase consideration, net of cash acquired | 51,100,000 | 77,860,000 | 77,860,000 | ||||||||||||||||||||
| Accounts receivable and unbilled receivables | 7,671,000 | 7,671,000 | 23,017,000 | ||||||||||||||||||||
| Other current assets | 1,382,000 | 1,382,000 | 9,527,000 | ||||||||||||||||||||
| Deferred income taxes | 2,129,000 | ||||||||||||||||||||||
| Property and equipment | 2,752,000 | 2,752,000 | 6,411,000 | ||||||||||||||||||||
| Other assets | 1,332,000 | ||||||||||||||||||||||
| Intangible assets | 20,542,000 | 20,542,000 | 3,200,000 | 22,183,000 | |||||||||||||||||||
| Total identifiable assets acquired | 32,347,000 | 32,347,000 | 64,599,000 | ||||||||||||||||||||
| Accounts payable and other liabilities | 6,228,000 | 6,228,000 | 20,666,000 | ||||||||||||||||||||
| Deferred revenue | 1,149,000 | 1,149,000 | 500,000 | 19,775,000 | |||||||||||||||||||
| Current income tax liability | 756,000 | 612,000 | 144,000 | ||||||||||||||||||||
| Deferred tax liability | 4,701,000 | 4,814,000 | (113,000) | ||||||||||||||||||||
| Total liabilities assumed | 12,834,000 | 12,803,000 | 31,000 | 40,441,000 | |||||||||||||||||||
| Net identifiable assets acquired | 19,513,000 | 19,544,000 | (31,000) | 24,158,000 | |||||||||||||||||||
| Goodwill | 170,626,000 | 171,867,000 | 112,032,000 | 124,920,000 | 125,096,000 | 63,517,000 | 45,706,000 | 46,771,000 | 48,515,000 | 58,347,000 | 58,316,000 | 31,000 | 19,963,000 | 19,327,000 | |||||||||
| Net assets acquired | 77,860,000 | 77,860,000 | 63,448,000 | ||||||||||||||||||||
| Cash consideration | $ 2,700,000 | 3,100,000 | |||||||||||||||||||||
| Amortization period of intangible assets | 19 years 6 months | 20 years | 4 years | ||||||||||||||||||||
| Number of business segments | 2 | ||||||||||||||||||||||