REVENUE RECOGNITION - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 24, 2017	Sep. 30, 2018	Sep. 24, 2017
Disaggregation of Revenue [Line Items]
NET SALES	$ 575,139	$ 407,511	$ 1,731,850	$ 1,160,083
Recreational Vehicle [Member]
Disaggregation of Revenue [Line Items]
NET SALES	354,573		1,128,026
Manufactured Housing [Member]
Disaggregation of Revenue [Line Items]
NET SALES	67,762		200,352
Industrial [Member]
Disaggregation of Revenue [Line Items]
NET SALES	72,335		212,591
Marine [Member]
Disaggregation of Revenue [Line Items]
NET SALES	80,469		190,881
Manufacturing [Member]
Disaggregation of Revenue [Line Items]
NET SALES	445,214	337,542	1,344,088	958,785
Manufacturing [Member] | Recreational Vehicle [Member]
Disaggregation of Revenue [Line Items]
NET SALES	262,936		847,944
Manufacturing [Member] | Manufactured Housing [Member]
Disaggregation of Revenue [Line Items]
NET SALES	41,428		124,406
Manufacturing [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
NET SALES	63,429		186,890
Manufacturing [Member] | Marine [Member]
Disaggregation of Revenue [Line Items]
NET SALES	77,421		184,848
Distribution [Member]
Disaggregation of Revenue [Line Items]
NET SALES	129,925	$ 69,969	387,762	$ 201,298
Distribution [Member] | Recreational Vehicle [Member]
Disaggregation of Revenue [Line Items]
NET SALES	91,637		280,082
Distribution [Member] | Manufactured Housing [Member]
Disaggregation of Revenue [Line Items]
NET SALES	26,334		75,946
Distribution [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
NET SALES	8,906		25,701
Distribution [Member] | Marine [Member]
Disaggregation of Revenue [Line Items]
NET SALES	$ 3,048		$ 6,033