RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES: (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	12 Months Ended		6 Months Ended	3 Months Ended	12 Months Ended		12 Months Ended		6 Months Ended	3 Months Ended	12 Months Ended		12 Months Ended		24 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Fiscal 2014	Mar. 31, 2013 Fiscal 2013	Mar. 31, 2012 Fiscal 2012	Sep. 30, 2013 Associate-related reserves	Sep. 30, 2013 Associate-related reserves Fiscal 2014 United States, Australia, and Europe	Mar. 31, 2013 Associate-related reserves Fiscal 2013 United States, Australia, and Europe	Sep. 30, 2013 Associate-related reserves Fiscal 2013 United States, Australia, and Europe	Mar. 31, 2012 Associate-related reserves Fiscal 2012 United States, Australia, Europe, and Brazil	Sep. 30, 2013 Associate-related reserves Fiscal 2012 United States, Australia, Europe, and Brazil	Sep. 30, 2013 Ongoing contract costs	Sep. 30, 2013 Ongoing contract costs Fiscal 2014	Mar. 31, 2013 Ongoing contract costs Fiscal 2013	Sep. 30, 2013 Ongoing contract costs Fiscal 2013 Maximum	Mar. 31, 2012 Ongoing contract costs Fiscal 2012	Sep. 30, 2013 Ongoing contract costs Fiscal 2012	Mar. 31, 2009 Ongoing contract costs Fiscal 2008 and 2009	Sep. 30, 2013 Ongoing contract costs Fiscal 2008 and 2009
Restructuring activity
Balance at the beginning of the period			$ 12,710,000					$ 3,689,000			$ 600,000		$ 1,000,000	$ 9,021,000			$ 100,000		$ 1,300,000		$ 6,700,000
Payments			(3,278,000)					(2,341,000)						(937,000)
Charges and adjustments	3,187,000	32,000	3,187,000	192,000	3,200,000	2,900,000	12,800,000	809,000	1,000,000	2,800,000		9,900,000		2,378,000	2,500,000	100,000		2,600,000		22,200,000
Balance at the end of the period	12,619,000		12,619,000					2,157,000	600,000		600,000		1,000,000	10,462,000	2,500,000		100,000		1,300,000		6,700,000
Adjustments					$ (300,000)		$ 300,000