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Rental Equipment, Property and Equipment (Depreciation Expense by Product Line) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Property, Plant and Equipment [Line Items] |  |  |
Depreciation | $ 23,143 | $ 21,954 | $ 21,191
Operating Segments |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Depreciation | 275 |  |
Corporate |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Depreciation | 235 | 50 | 29
Rentals | Operating Segments |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Depreciation | 22,596 | 21,611 | 20,873
Sales | Operating Segments |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Depreciation |  | 271 | 267
Service & Maintenance | Operating Segments |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Depreciation | $ 37 | $ 22 | $ 22

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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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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. + References No definition available. + Details
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