Amount of intangible assets including goodwill, acquired at the acquisition date.

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Restriction period on the re-sale of shares associated with a business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount of assets acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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Business Combinations (Details) - USD ($) $ in Millions			12 Months Ended
Business Combinations (Details) - USD ($) $ in Millions	Mar. 19, 2019	Nov. 05, 2018	Jan. 31, 2020	Jan. 31, 2019	Jul. 31, 2019
Business Combinations
Purchase price, net of cash acquired			$ 27.6	$ 140.0
Goodwill			28.3	43.2
Goodwill			28.3	$ 43.2
Purchase price adjustments			0.3
Motley
Business Combinations
Cash paid for acquisition		$ 140.0
Common stock value issued as consideration		9.0
Identified intangible assets including goodwill		71.8
Identified intangibles					$ 28.3
Goodwill		43.5			43.5
Goodwill		43.5			$ 43.5
Tecton and Red Bone
Business Combinations
Total consideration	$ 74.6
Cash paid for acquisition	27.6
Common stock value issued as consideration	47.0
Identifiable assets	51.2
Identified intangibles	19.4
Goodwill	31.8
Goodwill	$ 31.8
Tecton and Red Bone \| Minimum
Business Combinations
Restriction period on re-sale of shares	6 months
Tecton and Red Bone \| Maximum
Business Combinations
Restriction period on re-sale of shares	24 months
Tecton
Business Combinations
Identified intangibles			6.2
Goodwill			15.0
Goodwill			15.0
Acquisitions revenues			21.8
Red Bone
Business Combinations
Identified intangibles			13.2
Goodwill			16.8
Goodwill			$ 16.8
Customer Contracts and Relationships and Covenants not to Compete [Member] \| Motley
Business Combinations
Identified intangibles		$ 28.3
Customer contracts and relationships
Business Combinations
Useful Life (years)			20 years
Customer contracts and relationships \| Motley
Business Combinations
Useful Life (years)		20 years
Customer contracts and relationships \| Tecton and Red Bone
Business Combinations
Useful Life (years)	20 years
Covenants not to compete \| Minimum
Business Combinations
Useful Life (years)			1 year 6 months
Covenants not to compete \| Maximum
Business Combinations
Useful Life (years)			3 years
Covenants not to compete \| Motley
Business Combinations
Useful Life (years)		3 years
Covenants not to compete \| Tecton
Business Combinations
Useful Life (years)	18 months
Covenants not to compete \| Red Bone
Business Combinations
Useful Life (years)	3 years