ACQUISITIONS - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 28, 2019	Feb. 20, 2019	Jan. 01, 2019	Dec. 31, 2018	Nov. 16, 2018	Oct. 28, 2018
Assets acquired:
Goodwill	$ 1,677,929			$ 1,640,211		$ 148,291
Liabilities assumed:
Lease liabilities	$ 312,617		$ 304,100
Environmental Stoneworks
Assets acquired:
Restricted cash		$ 3,379
Accounts receivable		17,134
Inventories		13,062
Prepaid expenses and other current assets		3,677
Property, plant and equipment		14,295
Lease right of use assets		11,372
Intangible assets (trade names/customer relationships)		91,170
Goodwill		60,487
Other assets		157
Total assets acquired		214,733
Liabilities assumed:
Accounts payable		5,910
Other accrued expenses		11,445
Lease liabilities		11,365
Other long-term liabilities		3,450
Total liabilities assumed		32,170
Net assets acquired		$ 182,563
Ply Gem
Assets acquired:
Cash					$ 102,121
Accounts receivable					345,801
Inventories					301,513
Prepaid expenses and other current assets					51,223
Property, plant and equipment					364,981
Intangible assets (trade names/customer relationships)					1,720,000
Goodwill					1,469,563
Other assets					3,262
Total assets acquired					4,358,464
Liabilities assumed:
Accounts payable					139,955
Other accrued expenses					246,341
Other long-term liabilities					31,947
Other long-term liabilities ($163.6 million for accrued long-term warranty)					163,561
Tax receivable agreement liability					47,355
Current warranty liabilities					25,300
Debt (inclusive of current portion)					2,674,767
Deferred income taxes					325,593
Total liabilities assumed					3,629,519
Net assets acquired					728,945
Current warranty liabilities					25,300
Accrued long-term warranty					$ 163,600