SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)	12 Months Ended
	Dec. 31, 2018
Statements Line Items
Description of annual franchise tax known as the Texas margin tax	the Texas margin tax, which is equal to 1% of the lesser of: (a) 70% of a taxable entity's revenue; and (b) 100% of total revenue less, at the election of the taxpayer: (i) cost of goods sold; or (ii) compensation.