REVISION OF PRIOR PERIOD FINANCIAL STATEMENTS (Details) (USD $) In Millions, unless otherwise specified		3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
	Mar. 31, 2013 Cumulative overstatement of revenue and accounts receivable	Sep. 30, 2013 Overstatement (Understatement) of revenue	Sep. 30, 2013 Overstatement (Understatement) of revenue	Mar. 31, 2013 Cumulative overstatement of rent expense and total other accrued liabilities and other long-term liabilities	Sep. 30, 2013 Overstatement of general and administrative expense	Sep. 30, 2013 Overstatement of general and administrative expense
Error Corrections And Prior Period Adjustments Revisions [Line Items]
Cumulative error	$ 0.7			$ 2.1
Amount of error		$ (0.1)	$ 0.1		$ 0.1	$ 0.1