Investment Securities (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Fair Value
Less than 12 months	$ 97,124	$ 29,598
12 months or longer	1,189	213
Total temporarily impaired securities	98,313	29,811
Unrealized losses
Less than 12 months	(2,016)	(939)
12 months or longer	(27)	(18)
Total Unrealized losses on temporarily impaired securities	(2,043)	(957)
Affiliated mutual funds
Fair Value
Less than 12 months	97,124	29,598
12 months or longer	1,189	213
Total temporarily impaired securities	98,313	29,811
Unrealized losses
Less than 12 months	(2,016)	(939)
12 months or longer	(27)	(18)
Total Unrealized losses on temporarily impaired securities	$ (2,043)	$ (957)