Accounting Policies (Details) - USD ($) $ in Thousands	Jan. 01, 2020	Jun. 30, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Non-cash cumulative effect adjustment to retained earnings, net of tax	$ 1,829
Reserve for contract assets and sales-type leases		$ 3,000
Accounts receivable allowance for credit losses		$ 7,600	$ 3,600
Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reserve for contract assets and sales-type leases	2,300
Accounts receivable allowance for credit losses	200
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Non-cash cumulative effect adjustment to retained earnings, net of tax	1,829
Retained Earnings | Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Non-cash cumulative effect adjustment to retained earnings, net of tax	1,800
Non-cash cumulative effect adjustment to retained earnings, tax	$ 600