BANK LINE OF CREDIT (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012 Line of Credit [Member]	Jul. 05, 2012 Line of Credit [Member]	Feb. 28, 2011 Line of Credit [Member]	Apr. 02, 2012 Increase in Line of Credit Borrowing Capacity [Member]	Jul. 05, 2012 Line of credit sublimit for issuance of letters of credit [Member]
Line of Credit Facility [Line Items]
Credit Agreement, maximum borrowing capacity		$ 100.0	$ 50.0	$ 65.0	$ 20.0
Letters of credit outstanding	$ 15.0