RETIREMENT AND DEFERRED COMPENSATION PLANS (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined contribution plan - Domestic Plans
Defined contribution plans
Total contributions by Company	$ 2.8	$ 2.6	$ 2.6
Defined contribution plan - Domestic Plans | Maximum
Defined contribution plans
Employer matching contribution as a percentage of salary	3.00%
Defined contribution plan - Foreign Plans
Defined contribution plans
Total contributions by Company	$ 2.3	$ 2.1	$ 1.8