LONG-TERM DEBT (Details) (USD $)					3 Months Ended		12 Months Ended	3 Months Ended	12 Months Ended			3 Months Ended			3 Months Ended				1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2011 Term loan credit agreement	Mar. 31, 2011 Term loan credit agreement	Jun. 30, 2011 Term loan credit agreement Tranche 2 Term Lenders	Jun. 30, 2011 Capital leases and installment payment	Mar. 31, 2011 Capital leases and installment payment	Jun. 30, 2011 Software license liabilities payable	Mar. 31, 2011 Software license liabilities payable	Jun. 30, 2011 Other debt and long-term liabilities	Mar. 31, 2011 Other debt and long-term liabilities	Jun. 30, 2011 Revolving credit facility	Jun. 30, 2011 Revolving credit facility Tranche 1 Revolving Lenders	Jun. 30, 2011 Revolving credit facility Tranche 2 Revolving Lenders	Jun. 30, 2011 Tranche 1 Term Lenders	Jun. 30, 2011 Tranche 2 Term Lenders	Jun. 30, 2011 Tranche 1 Revolving Lenders	Jun. 30, 2011 Tranche 2 Revolving Lenders	Jul. 31, 2011 Interest rate swap	Jun. 30, 2011 Interest rate swap	Mar. 31, 2009 Interest rate swap	Jul. 25, 2011 Interest rate swap
Long-term debt
Total long-term debt and capital leases	$ 393,677,000	$ 422,238,000	$ 328,500,000	$ 355,000,000	$ 328,500,000	$ 42,154,000	$ 43,195,000	$ 4,318,000	$ 4,686,000	$ 18,705,000	$ 19,357,000
Less current installments	28,112,000	27,978,000
Long-term debt, excluding current installments	365,565,000	394,260,000
Long-term debt stated interest rate percentage, minimum (as a percent)						0.03	0.03
Long-term debt stated interest rate percentage, maximum (as a percent)						0.08	0.08
Long-term debt effective interest rate percentage, minimum (as a percent)								0.04	0.04
Long-term debt effective interest rate percentage, maximum (as a percent)								0.07	0.07
Maximum remaining maturity period of debt (in years)						12	12
Maximum maturity period of debt (in years)								3	3
Aggregate amount of borrowing commitment			600,000,000									200,000,000	80,000,000	120,000,000
Required quarterly installment payments					1,500,000
Final payment of long-term debt due March 15, 2015					307,500,000
Long-term debt variable interest rate description												LIBOR plus a credit spread, or at an alternative base rate or at the Federal Funds rate plus a credit spread			LIBOR	LIBOR
Long-term debt basis spread on variable interest rate (as a percent)															1.75%	3.00%	1.50%	2.75%
Weighted-average interest rate on long-term debt (as a percent)			4.10%
Outstanding letters of credit												500,000
Revolving credit facility dividend restrictions amount, maximum												30,000,000
Fixed interest rate payable on swap (as a percent)																					3.25%	0.94%
Notional amount of derivative																					95,000,000	150,000,000
Description of variable interest rate basis receivable on swap																			LIBOR		LIBOR
LIBOR rate (as a percent)																				0.27%		0.25%
Fair market value of the derivative at inception																				0
Unrealized loss of the derivative recorded in other comprehensive income (loss)																				$ (200,000)