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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Commitments and Contingencies Litigation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	$ 67,941	$ 54,448	$ 119,716	$ 97,076
Accounts receivable, net	45,652		45,652		$ 18,989
Pending Litigation [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenues	17,573		24,252
Accounts receivable, net	$ 34,564		$ 34,564