Employee Benefit Plans (Details 11)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Equity Securities [Member]
Summary of target allocation percentage of assets
Target	42.00%	60.00%
U.S. equity [Member]
Summary of target allocation percentage of assets
Target	25.00%	36.00%
International equity [Member]
Summary of target allocation percentage of assets
Target	17.00%	24.00%
Fixed Income, Money Market, Cash and Guaranteed Investment Contracts [Member]
Summary of target allocation percentage of assets
Target	58.00%	40.00%
Fixed income [Member]
Summary of target allocation percentage of assets
Target	56.00%
Money market/cash/guaranteed investments contract [Member]
Summary of target allocation percentage of assets
Target	2.00%