Securities Owned And Securities Sold, But Not Yet Purchased, at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	$ 887	$ 1,061
Corporate stocks
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	44	256
Securities sold, but not yet purchased at fair value	32	55
Municipal bonds
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	638	696
Restricted stock
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	205	109
Level 1
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	682	952
Level 1 | Corporate stocks
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	44	256
Securities sold, but not yet purchased at fair value	32	55
Level 1 | Municipal bonds
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	638	696
Level 1 | Restricted stock
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	0	0
Level 2
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	205	109
Level 2 | Corporate stocks
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	0	0
Securities sold, but not yet purchased at fair value	0	0
Level 2 | Municipal bonds
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	0	0
Level 2 | Restricted stock
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	205	109
Level 3
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	0	0
Level 3 | Corporate stocks
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	0	0
Securities sold, but not yet purchased at fair value	0	0
Level 3 | Municipal bonds
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	0	0
Level 3 | Restricted stock
Security Owned and Sold, Not yet Purchased, at Fair Value [Line Items]
Securities owned at fair value	$ 0	$ 0