Debt - Principal Payments on, and Estimated Amortization on Debt (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013
Debt Instrument [Line Items]
2014	$ 1,215
2015	17,152
2016	1,290
2017	1,332
2018	1,375
Thereafter	82,141
Total principal payments on debt	104,505
Secured Borrowings Principal [Member]
Debt Instrument [Line Items]
2014	1,069
2015	1,106
2016	1,144
2017	1,186
2018	1,229
Thereafter	29,479
Total principal payments on debt	35,213
Secured Borrowings Deferred Premiums [Member]
Debt Instrument [Line Items]
2014	146
2015	146
2016	146
2017	146
2018	146
Thereafter	2,092
Total principal payments on debt	2,822
All Other Debt [Member]
Debt Instrument [Line Items]
2014
2015	15,900
2016
2017
2018
Thereafter	50,570
Total principal payments on debt	$ 66,470