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Accounting Policies (Details) - USD ($) $ in Thousands | Jan. 01, 2020 | Mar. 31, 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 |  | $ 2,900 |
Accounts receivable allowance for credit losses |  | $ 7,000 | $ 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 | 2,200 |  |
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 |  |

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