Revolving Line of Credit (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Debt covenants [Table Text Block]

Quarterly Financial Covenants	Requirement	Actual
EBITDA to fixed charges ratio	1.15 : 1.00	10.76 : 1.00
Total net leverage ratio	3.25 : 1.00	0.00 : 1.00