LONG-TERM DEBT, DERIVATIVES AND LETTERS OF CREDIT - Additional Information (Details) € in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2017 EUR (€)	Dec. 31, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Line of Credit Facility [Line Items]
Maximum Leverage Ratio	3.00	3.00
Quarterly decrease in maximum Total Leverage Ratio	0.50
Borrowing capacity	$ 600,000,000
Commitment fee percentage	0.40%
Maximum Leverage Ratio after Permitted Debt Incurrence Date	4.00	4.00
Actual Total Leverage Ratio	4.77
Quarterly decrease in Total Leverage Ratio after Permitted Debt Incurrence Date	0.25
Maximum ratio of senior secured debt to consolidated EBITDA	3.00	3.00
Decrease in ratio of senior secured debt to consolidated EBITDA	0.25
Minimum interest coverage ratio	3.00	3.00
Cash on hand	$ 23,740,000		$ 46,216,000	$ 88,309,000	$ 44,825,000
Available borrowing capacity	18,000,000
Unamortized debt issuance costs	3,000,000
Net Investment Hedge
Line of Credit Facility [Line Items]
Borrowing under credit facility	$ 13,100,000	€ 12.3
LIBOR
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.25%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowing capacity	$ 400,000,000
Debt term	5 years
Term Loan Facility
Line of Credit Facility [Line Items]
Borrowing capacity	$ 200,000,000
Debt term	5 years
Swing Line Facility
Line of Credit Facility [Line Items]
Borrowing capacity	$ 35,000,000
Standby Letters of Credit
Line of Credit Facility [Line Items]
Outstanding letters of credit	$ 20,700,000		$ 21,600,000
March 31, 2017
Line of Credit Facility [Line Items]
Maximum Leverage Ratio	5.00	5.00
Maximum Leverage Ratio after Permitted Debt Incurrence Date	5.00	5.00
Maximum ratio of senior secured debt to consolidated EBITDA	4.00	4.00
June 30, 2017
Line of Credit Facility [Line Items]
Maximum Leverage Ratio	5.00	5.00
Maximum Leverage Ratio after Permitted Debt Incurrence Date	5.25	5.25
Maximum ratio of senior secured debt to consolidated EBITDA	4.25	4.25
Minimum
Line of Credit Facility [Line Items]
Amount of unsecured debt that would be incurred	$ 125,000,000