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Commitments and Contingencies (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Sep. 30, 2020
--- | --- | ---
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Unrecorded unconditional purchase obligation | $ 250,458 |
Amounts accrued related to business acquisitions | 44,852 | $ 1,676
99designs acquisition [Member] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Amounts accrued related to business acquisitions | 44,423 |
Third-party web services [Domain] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Unrecorded unconditional purchase obligation | 100,652 |
Inventories [Member] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Unrecorded unconditional purchase obligation | 55,731 |
Software and Software Development Costs |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Unrecorded unconditional purchase obligation | 52,957 |
Advertising Purchase Commitment [Member] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Unrecorded unconditional purchase obligation | 10,078 |
Production and Computer Equipment [Domain] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Unrecorded unconditional purchase obligation | 10,047 |
Professional Fees [Domain] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Unrecorded unconditional purchase obligation | 7,958 |
Other purchase commitments [Member] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Unrecorded unconditional purchase obligation | $ 13,035 |

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- Definition Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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