Employee Compensation Plans - Summarizes of Company's Non-Vested Options (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Number of Options, Non-vested beginning of year	26,890
Number of Options, Granted	2,976	951
Number of Options, Vested	(14,830)
Number of Options, Non-vested end of year	15,036	26,890
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted average fair value, Non-vested beginning of year	$ 10.86
Weighted average fair value, Granted	$ 9.94	$ 6.60
Weighted average fair value, Vested	$ 11.38
Weighted average fair value, Non-vested end of year	$ 10.17	$ 10.86