Commitments and Contingencies - Receivables (Details)	12 Months Ended
	Dec. 31, 2019
Geographic location, Two
Concentration of Credit Risk
Credit period for accounts receivable	150 days
Minimum | Geographic location, One
Concentration of Credit Risk
Credit period for accounts receivable	30 days
Maximum | Geographic location, One
Concentration of Credit Risk
Credit period for accounts receivable	90 days