Income Taxes (Details 6) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Taxes
Income tax benefit recorded			$ 675,000	$ 1,282,000
Tax refunds received	753,000	1,357,000
Reconciliation of the beginning and ending amount of unrecognized tax benefits
Beginning balance			1,438,000	1,369,000
Decreases related to settlements of certain tax audits			0	(16,000)
Increases related to settlements of certain tax audits			0	0
Decreases related to prior year tax positions			0	0
Increases related to prior year tax positions			0	0
Other			(67,000)	85,000
Ending balance		1,438,000	1,371,000	1,438,000
Net operating losses available to offset uncertain tax liability			1,221,000
Net balance of income tax liability if realized, would impact the effective tax rate			150,000
Reasonably possible change of the unrecognized tax benefits in the next twelve months, low end of range			0
Reasonably possible change of the unrecognized tax benefits in the next twelve months, high end of range			150,000
Accrued interest and penalties for the uncertain tax positions			693,000
Income tax liabilities		1,037,000	1,076,000	1,037,000
CCL
Reconciliation of the beginning and ending amount of unrecognized tax benefits
Net balance of income tax liability if realized, would impact the effective tax rate			150,000
Accrued interest and penalties for the uncertain tax positions			693,000
Withholding tax liability on a liquidating dividend			233,000
Income tax liabilities			1,076,000
CRA
Income Taxes
Tax refunds received				1,357,000
CRA | CCL
Income Taxes
Income tax benefit recorded				1,279,000
Tax refunds received				1,357,000
Province of Ontario tax authority | CCL
Income Taxes
Income tax benefit recorded			675,000
San Juan Municipality
Income Taxes
Amount paid				16,000
Provincial government of Alberta, Canada
Income Taxes
Tax refunds received			14,000
Provincial government of Alberta, Canada | CCL
Income Taxes
Tax refunds received			$ 14,000