Client Concentration (Tables)

12 Months Ended

Dec. 31, 2019

Revenue

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

The list of our customers changes periodically. Our largest customers accounted for the following percentages of total net revenue:

	Year Ended December 31,
	2019		2018
Customer A	—	%	15	%

Accounts Receivable [Member]

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

Our largest customers accounted for the following percentages of total gross accounts receivable:

	Year Ended December 31,
Accounts Receivable	2019		2018
Customer A	11	%	32	%
Customer B	10	%	14	%