Revenue - Disaggregation of Revenue - Contract Liabilities Refundable Customer Deposits (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
Sep. 30, 2019	Jun. 30, 2021
Change in Contract with Customer, Liability
Beginning balance		$ 5,208
Additions to contract liabilities		32,842
Revenue recognized		(16,759)
Impact of acquisitions		141,336
Ending balance		162,627
Unearned premiums		148,900
Unearned ceding commissions		10,000
Refundable Customer Deposits
Change in Contract with Customer, Liability
Beginning balance		3,193
Additions to contract liabilities - prepayment	$ 7,000
Additions to contract liabilities		966
Additions to contract liabilities - significant financing component interest		110
Revenue recognized		(1,592)
Ending balance		$ 2,677

Amount of increase in contract liability due to additions during the year.

No definition available.

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- Definition

Amount of increase in contract liability due to additions from prepayment during the year.

+ References

No definition available.

+ Details

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- Definition

Amount of increase (decrease) in revenue recognized for Significant Financing Component Interest.

+ References

No definition available.

+ Details

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- Definition

Carrying amount of ceding commissions written on insurance contracts that have not been earned as of the balance sheet date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- References

No definition available.

+ Details

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130531-203044

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121556615&loc=SL49130532-203044

+ Details

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- Definition

Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration from customer has been received or is due, from business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

+ Details

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Balance Type:	credit
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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Carrying amount of premiums written on insurance contracts that have not been earned as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(13)(a)(2))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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- Details

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