DEBT (Narrative) (Details) $ in Millions		3 Months Ended
	Apr. 16, 2020 USD ($)	Mar. 31, 2020 USD ($)	Apr. 13, 2020 USD ($)	Apr. 01, 2020 USD ($)	Mar. 31, 2020 NZD ($)
Debt Instrument [Line Items]
Total debt		$ 1,057,000,000
Covenant EBITDA to consolidated interest expense, Requirement		2.5			2.5
Covenant EBITDA to consolidated interest expense, Actual		10.3			10.3
Covenant EBITDA to consolidated interest expense, Favorable		7.8			7.8
Covenant debt to net worth plus covenant debt, Requirement		0.65			0.65
Covenant debt to net worth plus covenant debt, Actual		0.43			0.43
Covenant debt to net worth plus covenant debt, Favorable		0.22			0.22
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 200,000,000
Proceeds from lines of credit		20,000,000.0
Repayments of lines of credit		20,000,000.0
Remaining borrowing capacity		116,500,000
Amount to secure outstanding letters of credit		1,500,000
Revolving Credit Facility | Subsequent event
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 300,000,000	$ 250,000,000
Term Credit Agreement
Debt Instrument [Line Items]
Total debt		350,000,000
Working Capital Facility
Debt Instrument [Line Items]
Proceeds from lines of credit		0
Repayments of lines of credit		0
Remaining borrowing capacity					$ 20.0
Incremental Term Loan Agreement borrowings due 2026
Debt Instrument [Line Items]
Total debt		$ 300,000,000
Senior Unsecured Incremental Term Loan | Subsequent event
Debt Instrument [Line Items]
Debt instrument term	5 years
Face amount	$ 250,000,000