Employee Benefit Plan - Summary of Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]
Discount rate used to develop end of period benefit obligations	4.37%	3.27%
Discount rate used to develop net periodic pension cost	4.37%	3.50%	4.59%
Expected long term rate on plan assets used to develop net periodic pension cost	0.00%	4.75%	5.00%
Rate of compensation increase used to develop net periodic pension cost			3.75%