Revenues and Customer Receivables - Narrative (Details) - USD ($)	Sep. 30, 2020	Mar. 09, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Accounts receivable	$ 69,920,000		$ 99,626,000
Contract assets	1,200,000		1,000,000.0
Contract liabilities	$ 0		$ 900,000
CJWS
Business Acquisition [Line Items]
Business acquisition, accounts receivable		$ 39,500,000

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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