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Significant Accounting Policies - Estimated Useful Lives of Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2021
Building
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	39 years
Equipment Installed at Customer Sites | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Equipment Installed at Customer Sites | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	7 years
Computer Equipment | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Computer Equipment | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	5 years
Furniture | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Furniture | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	10 years
Automobiles | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Automobiles | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	7 years
Software | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Software | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	7 years
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	Shorter of lease term or estimated useful life

X

- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123364984&loc=d3e1205-110223

+ 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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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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