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Credit Losses (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Accounts receivable allowance for credit losses | $ 6.8 | $ 3.6
Percent of accounts receivable not past due | 88.00% | 84.00%
Percent of accounts receivable past due | 12.00% | 16.00%
Accounts receivable, noncurrent, threshold period past due | 60 days | 60 days
Reserve for contract assets and sales-type leases | $ 3.7 |
Greater than 60 Days Past Due |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Percent of accounts receivable past due | 1.50% | 1.50%

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