Summary of Significant Accounting Policies - Additional Information (Details)	3 Months Ended	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2020 USD ($) segment plan	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | segment		1
Standard product warranty period		1 year
Deposits with foreign banks	$ 89,300,000	$ 119,200,000	$ 89,300,000
Sales demonstration inventory turnover period (up to)		3 years
Refurbished sales demonstration inventory turnover period		12 months
Service inventory turnover period		12 months
Service inventory not for sale, useful life		3 years
Reserve percentage of FIFO obsolete and excess inventory		100.00%
Threshold for capitalization of property and equipment		$ 1,000
Depreciation expense		10,800,000	13,000,000.0	$ 12,900,000
Impairment of goodwill	21,200,000	0	21,233,000	0
Indefinite-lived intangible assets	0	$ 0	0
Intangible assets weighted-average amortization period		5 years
Assets impairment charges	35,200,000	$ 0	35,213,000	$ 0
Warranty term		1 year
Number of compensation plans | plan		2
Operating lease right-of-use asset	18,418,000	$ 26,107,000	18,418,000
Lease liability	19,621,000	27,542,000	$ 19,621,000
Open Technologies
Summary Of Significant Accounting Policies [Line Items]
Impairment of goodwill		21,200,000
2019 Acquisitions
Summary Of Significant Accounting Policies [Line Items]
Assets impairment charges	$ 10,500,000	$ 10,500,000
Performance Shares
Summary Of Significant Accounting Policies [Line Items]
Vesting period, years		3 years
Minimum
Summary Of Significant Accounting Policies [Line Items]
Account receivable period due		30 days
Other intangible assets, useful life		3 years
Minimum | Product technology and patents
Summary Of Significant Accounting Policies [Line Items]
Other intangible assets, useful life		7 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Account receivable period due		90 days
Other intangible assets, useful life		20 years
Maximum | Product technology and patents
Summary Of Significant Accounting Policies [Line Items]
Other intangible assets, useful life		20 years
Accounting Standards Update 2016-02 | Minimum
Summary Of Significant Accounting Policies [Line Items]
Operating lease right-of-use asset		$ 18,400,000
Accounting Standards Update 2016-02 | Maximum
Summary Of Significant Accounting Policies [Line Items]
Lease liability		19,600,000
Property, Plant and Equipment | Accounting Standards Update 2016-02 | Maximum
Summary Of Significant Accounting Policies [Line Items]
Lease liability		800,000
Finance Lease | Accounting Standards Update 2016-02 | Maximum
Summary Of Significant Accounting Policies [Line Items]
Lease liability		$ 800,000