Commitments and Contingencies (Details Textual) (USD $)	1 Months Ended	3 Months Ended				12 Months Ended
Commitments and Contingencies (Details Textual) (USD $)	Sep. 30, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2012	Sep. 22, 2011	Sep. 30, 2011	Sep. 30, 2010
Medicare and Medical Programs [Line Items]
Positive impact related to the Company's operations		$ 42,482,000	$ 42,080,000	$ 43,899,000	$ 38,840,000		$ 167,301,000		$ 166,411,000
Contingencies and Commitments (Textual) [Abstract]
Rent expense under noncancelable rental commitments								1,400,000	1,200,000
Payment of termination fee						800,000
Minimum net rental commitments						500,000
Amount of exercise of call						2,600,000
Redeemable noncontrolling interest , net of taxes									2,900,000
Redeemable noncontrolling interest after net of taxes									1,600,000
Additional redeemable noncontrolling interest					2,200,000	4,500,000
Net obligation						5,700,000
Increase in net obligation						500,000		1,900,000
Total obligation	7,600,000	7,600,000						7,600,000
Obligation paid						1,800,000		4,600,000
Noncontrolling stockholders partnership interest						zero prior to the amendment
Outstanding Non controlling interest	3,000,000	3,000,000				1,700,000		3,000,000
Adjustment recognised to the statement of net assets						100,000
Timeframes of ICD implanted for primary prevention						within 30 days of a myocardial infarction, or within 90 days of a coronary artery bypass graft or percutaneous transluminal coronary angioplasty
Authority to look back at claims						up to three years old
Period of Claims made policy providing coverage for medical malpractice claim								1 year
Compensatory damages						3,300,000
Exemplary damages						6,600,000
Estimated amount for incurred but not reported claims	600,000	600,000				300,000		600,000
Estimated reserve for self-insured liabilities	1,000,000	1,000,000				200,000		1,000,000
Medical malpractice claim amounts in excess of retained liability per claim	2,000,000
Purchased additional insurance to reduce the retained liability per claim	300,000
Commercial stop loss coverage for health and dental insurance program per plan participant						200,000
Medicare and Medicaid Services [Member]
Medicare and Medical Programs [Line Items]
Positive impact related to the Company's operations						5,900,000
Net of tax and noncontrolling interests						2,700,000
Cash settlement before minority interest and taxes						3,700,000
Cash settlement reflected in accounts receivable						$ 1,200,000

MEDCATH CORP 10-K