Deferred Income (New Markets Tax Credit Transaction) (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended			6 Months Ended
	Sep. 11, 2012	Feb. 03, 2012	Sep. 30, 2014	Mar. 31, 2015
Deferred Income (New Markets Tax Credit Transaction)
Deferred income			$ 30,990	30,990
Deferred costs, net			13,515	14,760
New Markets Tax Credit Program Special Purpose Entity [Member] | Federal New Markets Tax Credit Transaction [Member]
Deferred Income (New Markets Tax Credit Transaction)
Maximum percentage of qualified investment permitted in NMTC to claim credits against Federal income tax				39.00%
Variable Interest Entity Primary Beneficiary [Member] | Investor [Member] | New Markets Tax Credit Program Special Purpose Entity [Member] | Federal New Markets Tax Credit Transaction [Member]
Deferred Income (New Markets Tax Credit Transaction)
Tax Credit Receivable Term	7 years	7 years
Deferred income			30,990
Variable Interest Entity Primary Beneficiary [Member] | RBHTRB Newark Holdings LLC [Member] | Investor [Member] | New Markets Tax Credit Program Special Purpose Entity [Member] | Federal New Markets Tax Credit Transaction [Member]
Deferred Income (New Markets Tax Credit Transaction)
Amount contributed to effect financing transaction	16,400	11,200	5,100
Deferred costs, net			$ 8,700	10,200
Variable Interest Entity Primary Beneficiary [Member] | RBHTRB Newark Holdings LLC [Member] | Subsidiaries [Member] | New Markets Tax Credit Program Special Purpose Entity [Member]
Deferred Income (New Markets Tax Credit Transaction)
Period after which option to acquire special purpose entity may be exercised				7 years