BUSINESS SEGMENTS - Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 145,070	$ 149,926
Loss from operations	(25,245)	(2,287)
Depreciation and amortization	6,234	6,359
Assets	758,469		$ 770,023
U.S.
Segment Reporting Information [Line Items]
Net sales	124,727	121,409
Operating segments \| U.S.
Segment Reporting Information [Line Items]
Assets	569,222		639,047
Operating segments \| International
Segment Reporting Information [Line Items]
Assets	96,802		117,935
Unallocated corporate expenses
Segment Reporting Information [Line Items]
Loss from operations	(4,631)	(5,626)
Assets	92,445		$ 13,041
U.S. \| Operating segments
Segment Reporting Information [Line Items]
Net sales	129,208	127,038
Loss from operations	(13,880)	4,386
Depreciation and amortization	5,062	5,271
International \| Operating segments
Segment Reporting Information [Line Items]
Net sales	15,862	22,888
Loss from operations	(6,734)	(1,047)
Depreciation and amortization	$ 1,172	$ 1,088

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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