IMPAIRMENT LOSSES AND RESTRUCTURING CHARGES Summary of Activity, Restructuring Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Laramie [Member]
Restructuring Reserve [Roll Forward]
Reclassification of liability	$ 20
Grand Junction [Member]
Restructuring Reserve [Roll Forward]
Reclassification of liability	138
Facility Related Costs [Member] | Victoria [Member]
Restructuring Reserve [Roll Forward]
Balance	537	483
Expense (reversal)	(443)	0
Payments for restructuring, net of expected sublease rentals	(78)	54
Balance	16	537
Facility Related Costs [Member] | Laramie [Member]
Restructuring Reserve [Roll Forward]
Balance	0	63
Expense (reversal)	0	(20)
Payments for restructuring, net of expected sublease rentals	0	(43)
Balance	0	0
Facility Related Costs [Member] | Grand Junction [Member]
Restructuring Reserve [Roll Forward]
Balance	0	252
Expense (reversal)	0	(138)
Payments for restructuring, net of expected sublease rentals	0	(114)
Balance	0	0
Facility Related Costs [Member] | Decatur [Member]
Restructuring Reserve [Roll Forward]
Balance	86	0
Expense (reversal)	(56)	464
Payments for restructuring, net of expected sublease rentals	(30)	(378)
Balance	0	86
Facility Related Costs [Member] | Regina [Member]
Restructuring Reserve [Roll Forward]
Balance	334	852
Expense (reversal)	0	671
Payments for restructuring, net of expected sublease rentals	(328)	(1,197)
Foreign currency translation adjustment	(6)	8
Balance	0	334
Facility Related Costs [Member] | Domestic [Member]
Restructuring Reserve [Roll Forward]
Balance	957	1,650
Expense (reversal)	(499)	977
Payments for restructuring, net of expected sublease rentals	(436)	(1,678)
Foreign currency translation adjustment	(6)	8
Balance	$ 16	$ 957