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v3.20.1

Revisions of Prior Period Financial Statements (Narrative) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Operating costs and expenses |  | $ 93,597 | $ 65,985 | $ 66,222
Minimum |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Rental arrangements, original term |  | 6 months |  |
Maximum |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Rental arrangements, original term |  | 60 months |  |
Revisions | Revision Of Prior Period Financial Statements |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Operating costs and expenses | $ 1,100 |  | $ 1,145 | $ 96

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- Definition Total costs of sales and operating expenses for the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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