ACQUISITIONS - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Feb. 20, 2019	Jan. 01, 2019	Dec. 31, 2018	Nov. 16, 2018	Oct. 28, 2018
Assets acquired:
Goodwill	$ 1,611,213			$ 1,640,211		$ 148,291
Liabilities assumed:
Lease liabilities	$ 287,805		$ 304,100
Environmental Stoneworks
Assets acquired:
Restricted cash		$ 3,379
Accounts receivable		17,134
Inventories		13,362
Prepaid expenses and other current assets		3,347
Property, plant and equipment		14,295
Lease right of use assets		11,372
Intangible assets (trade names/customer relationships)		91,170
Goodwill		59,863
Other assets		157
Total assets acquired		214,079
Liabilities assumed:
Accounts payable		5,910
Other accrued expenses		10,791
Lease liabilities		11,365
Other long-term liabilities		3,450
Total liabilities assumed		31,516
Net assets acquired		$ 182,563
Ply Gem
Assets acquired:
Cash					$ 102,121
Accounts receivable					345,472
Inventories					301,513
Prepaid expenses and other current assets					51,841
Property, plant and equipment					364,603
Intangible assets (trade names/customer relationships)					1,720,000
Goodwill					1,402,737
Other assets					3,262
Total assets acquired					4,291,549
Liabilities assumed:
Accounts payable					139,955
Other accrued expenses					245,611
Other long-term liabilities					29,834
Tax receivable agreement liability					47,355
Current warranty liabilities					27,500
Debt (inclusive of current portion)					2,674,767
Other long-term liabilities ($78.6 million for accrued long-term warranty)					78,552
Deferred income taxes					346,530
Total liabilities assumed					3,562,604
Net assets acquired					$ 728,945