RESTRUCTURING CHARGES - Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Intangible assets impairment		$ 2,414	$ 9,863
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Employee severance and related costs	$ 1,705	7,207
Other costs	660	3,324
Fixed assets impairment	0	3,133
Intangible assets impairment	0	2,414
Other	(183)	445
Total pre-tax restructuring expenses	2,182	16,523
United States | Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Employee severance and related costs	946	3,348
Other costs	351	2,141
Fixed assets impairment	0	3,133
Intangible assets impairment	0	2,167
Other	0	0
Total pre-tax restructuring expenses	1,297	10,789
International | Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Employee severance and related costs	759	3,859
Other costs	309	1,183
Fixed assets impairment	0	0
Intangible assets impairment	0	247
Other	(183)	445
Total pre-tax restructuring expenses	$ 885	$ 5,734