Long - Term Debt and Bank Facility Borrowings (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Partnership's debt
Long-term debt	$ 124,357	$ 124,263
Carrying Amount [Member]
Partnership's debt
Long-term debt	124,357	124,263
Total long-term portion of debt	124,357	124,263
Estimated Fair Value [Member]
Partnership's debt
Long-term debt	126,563	127,500
Total long-term portion of debt	126,563	127,500
8.875% Senior Notes [Member] | Carrying Amount [Member]
Partnership's debt
Long-term debt	124,357	124,263
8.875% Senior Notes [Member] | Estimated Fair Value [Member]
Partnership's debt
Long-term debt	126,563	127,500
Revolving Credit Facility Borrowings [Member] | Carrying Amount [Member]
Partnership's debt
Long-term debt
Revolving Credit Facility Borrowings [Member] | Estimated Fair Value [Member]
Partnership's debt
Long-term debt