MERGER (Details) (Scenario, Forecast, USD $) In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Feb. 03, 2014
Business Acquisition [Line Items]
Business acquisition, share price in merger consideration		$ 48.25
Termination fee to pay upon termination of Merger Agreement	$ 54.9
Stock option or stock appreciation award
Business Acquisition [Line Items]
Business acquisition, share price in merger consideration		$ 48.25
Restricted stock award
Business Acquisition [Line Items]
Business acquisition, share price in merger consideration		$ 48.25
Performance award
Business Acquisition [Line Items]
Business acquisition, share price in merger consideration		$ 48.25
Percentage of target number of shares covered by award (less than one-third)		33.33%