Investment Securities (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value
Less than 12 months	$ 29,598
12 months or longer	213
Total temporarily impaired securities	29,811
Unrealized losses
Less than 12 months	(939)
12 months or longer	(18)
Total Unrealized losses on temporarily impaired securities	(957)
Fair value
Total fair value	94,058	69,377
Amortized Cost
Within one year	14,568
After five years but within 10 years	8
Total amortized cost	14,576
Fair value
Within one year	14,629
After five years but within 10 years	9
Total fair value	14,638
Affiliated mutual funds
Fair Value
Less than 12 months	29,598
12 months or longer	213
Total temporarily impaired securities	29,811
Unrealized losses
Less than 12 months	(939)
12 months or longer	(18)
Total Unrealized losses on temporarily impaired securities	(957)
Fair value
Total fair value	84,048	56,683
Mortgage-Backed Securities and Bonds
Fair value
Within one year	9,412
After one year but within five years	501
After five years but within 10 years	37
Total fair value	9,950
Corporate bonds
Fair value
Total fair value	$ 9,412	$ 12,112