GEOGRAPHIC INFORMATION - Net Sales and Long Lived Assets by Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 153,363	$ 147,597	$ 455,385	$ 452,525
Long Lived Assets	85,808		85,808		$ 71,232
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	135,125	132,600	403,157	405,913
Long Lived Assets	82,410		82,410		68,556
Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	18,238	$ 14,997	52,228	$ 46,612
Long Lived Assets	$ 3,398		$ 3,398		$ 2,676