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Revenue - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Dec. 31, 2020 | Sep. 30, 2020
Disaggregation Of Revenue [Line Items] |  |  |
Contract with customer liability |  | $ 0 | $ 0
Accrued incentive fees as per the terms of investment management agreements |  | $ 9,200,000 |
Minimum |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Incentive fee earned as percentage on investment performance |  | 5.00% |
Equipment Lease Term |  | 10 months |
Maximum |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Incentive fee earned as percentage on investment performance |  | 20.00% |
Equipment Lease Term |  | 36 months |
GECC |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Annual rate of base management fee earned as percentage of average adjusted gross assets |  | 1.50% |
Equipment Sales | Accounts Receivable |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Unbilled revenue | $ 1,200,000 | $ 800,000 |
Equipment Rental |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Contract with customer liability | 1,300,000 | 1,000,000.0 |
Equipment Rental | Accounts Receivable |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Unbilled revenue | 700,000 | $ 500,000 |
Centers For Medicare And Medicaid Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Proceeds from federal agency | $ 4,400,000 |  |

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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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