PROPERTY AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Depreciation	$ 4,781	$ 5,380	$ 9,904	$ 10,915
Property, Plant and Equipment, Gross	331,017		331,017		$ 327,167
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(221,324)		(221,324)		(213,400)
Property, Plant and Equipment, Net	109,693		109,693		113,767
Cost of goods sold
Property, Plant and Equipment [Line Items]
Depreciation	147	177	301	367
Technology
Property, Plant and Equipment [Line Items]
Depreciation	3,594	3,596	7,469	7,337
General and administrative
Property, Plant and Equipment [Line Items]
Depreciation	1,040	1,607	2,134	3,211
Software Development [Member]
Property, Plant and Equipment [Line Items]
Capitalized Computer Software, Additions	1,758	3,648	3,462	5,586
Capitalized Computer Software, Amortization	1,774	$ 2,470	3,582	$ 4,856
Computer hardware and software, including internal-use software and website development
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	217,553		217,553		213,124
Building
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	69,245		69,245		69,245
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	11,906		11,906		12,165
Land
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	12,781		12,781		12,781
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	2,717		2,717		3,049
Building machinery and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	9,805		9,805		9,793
Land improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 7,010		$ 7,010		$ 7,010