INCOME TAXES Uncertain tax positions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of the total amounts of unrecognized tax benefits
Unrecognized tax benefits at January 1	$ 3,095	$ 3,328
Reductions to unrecognized tax benefits from lapse of statutes of limitations	(197)	(233)
Unrecognized tax benefits at December 31	2,898	3,095
Unrecognized tax benefits that would affect the effective tax rate	400
Maximum uncertain tax positions expected to lapse in 2020	700
Interest and penalties related to uncertain income tax positions	1,200	1,700
Continuing Operations
Reconciliation of the total amounts of unrecognized tax benefits
Unrecognized tax benefits at January 1	1,901
Unrecognized tax benefits at December 31	1,900	1,901
Discontinued Operations
Reconciliation of the total amounts of unrecognized tax benefits
Unrecognized tax benefits at January 1	1,194
Unrecognized tax benefits at December 31	$ 998	$ 1,194
Minimum | Federal
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2006
Minimum | Mexico.
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2014
Minimum | China
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2011
Minimum | The Netherlands
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2016
Maximum | Federal
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2019
Maximum | Mexico.
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2019
Maximum | China
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2017
Maximum | The Netherlands
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2018