Revenue - Additional Information (Details) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2019
USD ($)
|
Sep. 30, 2019
USD ($)
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Jun. 30, 2019
USD ($)
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Mar. 31, 2019
USD ($)
|
Dec. 31, 2018
USD ($)
|
Sep. 30, 2018
USD ($)
business_line
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Jun. 30, 2018
USD ($)
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Mar. 31, 2018
USD ($)
|
Dec. 31, 2019
USD ($)
|
Sep. 30, 2019
business_line
|
Dec. 31, 2019
USD ($)
business_line
|
Dec. 31, 2018
USD ($)
|
|
| Disaggregation of Revenue [Line Items] | ||||||||||||
| Revenues | $ 156,281 | $ 160,083 | $ 156,031 | $ 157,397 | $ 129,148 | $ 123,395 | $ 118,603 | $ 109,675 | $ 472,395 | $ 480,821 | ||
| Number of business lines | business_line | 2 | 2 | 2 | |||||||||
| Typical payment term | 30 days | |||||||||||
| Minimum | ||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||
| Contract term | P2M | |||||||||||
| Maximum | ||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||
| Contract term | P60M | |||||||||||
| Lease revenue | ||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||
| Deferred service revenue | 0 | 0 | $ 0 | |||||||||
| Revenues | 42,041 | 174,074 | ||||||||||
| Service revenue | ||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||
| Deferred service revenue | $ 2,451 | 2,451 | $ 2,451 | |||||||||
| Revenues | 115,356 | 298,321 | ||||||||||
| Reimbursable revenue | ||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||
| Revenues | $ 28,541 | $ 70,174 | $ 54,620 | |||||||||
| X | ||||||||||
- Definition Contract With Customer, Typical Payment Term No definition available.
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| X | ||||||||||
- Definition Number Of Business Lines No definition available.
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- Definition Description of effect, from relationship that timing of satisfaction of performance obligation has on timing of payment, on right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time and on obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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| X | ||||||||||
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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