LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Financing arrangements - Interest rate swap) (Details) - Interest rate swap agreement - USD ($) $ in Millions	1 Months Ended
	Nov. 30, 2014	Dec. 31, 2016	Dec. 31, 2015
Financing Arrangements
Term of swap agreement	5 years
Notional amount	$ 50.0
Fixed interest rate payments (as a percent)		1.85%
Other long-term liabilities
Financing Arrangements
Fair value		$ 0.5	$ 0.9
Credit Facility
Financing Arrangements
Amount of borrowings covered by the interest rate swap		$ 50.0
Effective fixed interest rate on hedged borrowings (as a percent)		3.35%