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Business Combinations - Additional Information (Details) - USD ($) $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
May 23, 2018 | Oct. 16, 2017 | Jan. 31, 2019 | Apr. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Sep. 30, 2018
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Payment to acquired business, net of cash acquired |  |  |  |  |  |  | $ 0 | $ 29,744 |
Acquisition-related costs and expenses |  |  |  |  | $ 1,761 | $ 3,154 | 5,361 | 5,616 |
Acquisition-related contingent consideration |  |  |  |  | $ 1,180 |  | 1,180 |  | $ 3,051
Payment of acquisition-related contingent consideration |  |  |  |  |  |  | $ 1,030 | $ 0 |
A2iA |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Payment to acquired business, net of cash acquired | $ 26,800 |  |  |  |  |  |  |  |
Stock issued during acquisition (in shares) | 2,514,588 |  |  |  |  |  |  |  |
Common stock issued during acquisition, value | $ 21,900 |  |  |  |  |  |  |  |
Transaction-related liabilities | 200 |  |  |  |  |  |  |  |
Acquisition-related costs and expenses | 2,200 |  |  |  |  |  |  |  |
Payments of cash for collateral | $ 700 |  |  |  |  |  |  |  |
Payments for collateral, equity, shares | 508,479 |  |  |  |  |  |  |  |
Payments for collateral, equity, value | $ 4,400 |  |  |  |  |  |  |  |
Period to maintain escrow deposit | 24 months |  |  |  |  |  |  |  |
ICAR |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Payment to acquired business, net of cash acquired |  | $ 3,000 |  |  |  |  |  |  |
Stock issued during acquisition (in shares) |  | 584,291 |  |  |  |  |  |  |
Common stock issued during acquisition, value |  | $ 5,600 |  |  |  |  |  |  |
Acquisition-related costs and expenses |  | 500 |  |  |  |  |  |  |
Period to maintain escrow deposit |  |  |  | 24 months |  |  |  |  |
Acquisition-related contingent consideration |  | 2,900 |  |  |  |  |  |  |
Escrow deposit |  | 1,500 |  | $ 1,500 |  |  |  |  |
ICAR | Q4 Consideration |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Contingent consideration arrangement, range of outcomes, high |  | 1,500 |  |  |  |  |  |  |
ICAR | Earnout Consideration |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Contingent consideration arrangement, range of outcomes, high |  | $ 3,800 |  |  |  |  |  |  |
Payment of acquisition-related contingent consideration |  |  | $ 1,800 |  |  |  |  |  |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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