Summary of Significant Accounting Policies, Trade Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Trade Accounts Receivable [Abstract]
Allowance for doubtful accounts associated with accounts receivable	$ 124	$ 58	$ 55
Minimum [Member]
Trade Accounts Receivable [Abstract]
Trade receivables, period for credit term	30 days
Maximum [Member]
Trade Accounts Receivable [Abstract]
Trade receivables, period for credit term	90 days