FAIR VALUE MEASUREMENTS (Narrative) (Details) (Investment in Conferencing Company, USD $) In Millions, unless otherwise specified	1 Months Ended
Feb. 28, 2014	Feb. 18, 2014
Investment in Conferencing Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percent of investment sold		50.00%
Investment accounted for under cost method investment	$ 1.0
Gain on sale of investment	$ 0.5

The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Name:	us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration