Total costs of sales and operating expenses for the period.

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-Name Accounting Standards Codification
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Summary of Significant Accounting policies - Equity Method Investments (Details) - Investment In Promon A - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity Method Investments
Ownership percentage	17.00%
Impairment of investments	$ 0	$ 0	$ 0
Accounts Payable and Accrued Liabilities [Member]
Equity Method Investments
Costs and Expenses	2,200
Cost of Sales [Member]
Equity Method Investments
Costs and Expenses	$ 3,500