Restatements Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Net (loss) income	$ 13,721	$ (259)
Other comprehensive (loss) income:
Other comprehensive income (loss), pension and other postretirement benefit plans, adjustment, net of tax	15
Other comprehensive income	5,854	(1,067)
Comprehensive (loss) income	19,575	(1,326)
Comprehensive income attributable to noncontrolling interests	(21,080)	1,063
Comprehensive (loss) income attributable to common shareholders	(1,505)	(263)
Eliminations [Member]
Net (loss) income	(471)	(1,235)
Other comprehensive (loss) income:
Other comprehensive income	365	(939)
Comprehensive (loss) income	(106)	(2,174)
Comprehensive income attributable to noncontrolling interests	(19,582)	1,490
Comprehensive (loss) income attributable to common shareholders	(19,688)	(684)
RSO [Member]
Net (loss) income	15,052	413
Other comprehensive (loss) income:
Other comprehensive income	5,825	(1,286)
Comprehensive (loss) income	20,877	(873)
Comprehensive income attributable to noncontrolling interests	(911)	0
Comprehensive (loss) income attributable to common shareholders	19,966	(873)
As Previously Reported [Member]
Net (loss) income	(860)	563
Other comprehensive (loss) income:
Other comprehensive income	(336)	1,158
Comprehensive (loss) income	(1,196)	1,721
Comprehensive income attributable to noncontrolling interests	(587)	(427)
Comprehensive (loss) income attributable to common shareholders	(1,783)	1,294
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member]
Other comprehensive (loss) income:
Unrealized (losses) gains on available-for-sale securities, net	6	46
Minimum pension liability adjustments, net of tax	(3)	0
Minimum pension liability - reclassification for losses realized, net of tax	18	47
Other comprehensive income (loss), pension and other postretirement benefit plans, adjustment, net of tax	15	47
Unrealized gain (loss) on hedging contracts, net of tax	8	(129)
Deconsolidation of LEAF- unrealized loss on hedging contracts net of tax	0	255
Other comprehensive income (loss), derivatives qualifying as hedges, net of tax	8	126
Other comprehensive income	29	219
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Eliminations [Member]
Other comprehensive (loss) income:
Unrealized (losses) gains on available-for-sale securities, net	412	(939)
Minimum pension liability adjustments, net of tax	(3)
Minimum pension liability - reclassification for losses realized, net of tax	(44)
Other comprehensive income (loss), pension and other postretirement benefit plans, adjustment, net of tax		0
Unrealized gain (loss) on hedging contracts, net of tax	0	0
Deconsolidation of LEAF- unrealized loss on hedging contracts net of tax		0
Other comprehensive income (loss), derivatives qualifying as hedges, net of tax		0
Other comprehensive income	365	(939)
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | RSO [Member]
Other comprehensive (loss) income:
Unrealized (losses) gains on available-for-sale securities, net	0	0
Minimum pension liability adjustments, net of tax	0
Minimum pension liability - reclassification for losses realized, net of tax	0
Other comprehensive income (loss), pension and other postretirement benefit plans, adjustment, net of tax		0
Unrealized gain (loss) on hedging contracts, net of tax	0	0
Deconsolidation of LEAF- unrealized loss on hedging contracts net of tax		0
Other comprehensive income (loss), derivatives qualifying as hedges, net of tax		0
Other comprehensive income	0	0
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | As Previously Reported [Member]
Other comprehensive (loss) income:
Unrealized (losses) gains on available-for-sale securities, net	(406)	985
Minimum pension liability adjustments, net of tax	0
Minimum pension liability - reclassification for losses realized, net of tax	62
Other comprehensive income (loss), pension and other postretirement benefit plans, adjustment, net of tax		47
Unrealized gain (loss) on hedging contracts, net of tax	8	(129)
Deconsolidation of LEAF- unrealized loss on hedging contracts net of tax		255
Other comprehensive income (loss), derivatives qualifying as hedges, net of tax		126
Other comprehensive income	(336)	1,158
VIE-RSO [Member]
Other comprehensive (loss) income:
Unrealized (losses) gains on available-for-sale securities, net	3,554	(1,933)
Reclassification adjustments associated with unrealized loss from interest rate hedges included in net income	57	76
Unrealized gain (loss) on hedging contracts, net of tax	1,509	3,007
Reclassification adjustments for gain (loss) included in net income	705	(2,436)
Other comprehensive income	5,825	(1,286)
VIE-RSO [Member] | Eliminations [Member]
Other comprehensive (loss) income:
Unrealized (losses) gains on available-for-sale securities, net	0	0
Reclassification adjustments associated with unrealized loss from interest rate hedges included in net income	0	0
Unrealized gain (loss) on hedging contracts, net of tax	0	0
Reclassification adjustments for gain (loss) included in net income	0	0
Other comprehensive income	0	0
VIE-RSO [Member] | RSO [Member]
Other comprehensive (loss) income:
Unrealized (losses) gains on available-for-sale securities, net	3,554	(1,933)
Reclassification adjustments associated with unrealized loss from interest rate hedges included in net income	57	76
Unrealized gain (loss) on hedging contracts, net of tax	1,509	3,007
Reclassification adjustments for gain (loss) included in net income	705	(2,436)
Other comprehensive income	5,825	(1,286)
VIE-RSO [Member] | As Previously Reported [Member]
Other comprehensive (loss) income:
Unrealized (losses) gains on available-for-sale securities, net	0	0
Reclassification adjustments associated with unrealized loss from interest rate hedges included in net income	0	0
Unrealized gain (loss) on hedging contracts, net of tax	0	0
Reclassification adjustments for gain (loss) included in net income	0	0
Other comprehensive income	$ 0	$ 0