1. DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Sources of patient service revenues	$ 91,592	$ 89,662
MedicareMember
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Sources of patient service revenues	14,762	15,451
MedicaidMember
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Sources of patient service revenues	8,784	11,720
ManagedCareMember
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Sources of patient service revenues	51,726	49,063
IndemnitySelfPayAndOtherMember
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Sources of patient service revenues	15,475	12,589
MiscellaneousMember
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Sources of patient service revenues	845	839
TotalMember
Health Care Organization, Receivable and Revenue Disclosures [Line Items]
Sources of patient service revenues	$ 91,592	$ 89,662