Employee Benefit Plans 401(k) Plan Narrative (Details) (401(k) Plan [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
401(k) Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employees contribution, maximum	100.00%
Matching contribution	50.00%
Percentage of employer matching contribution to employees compensation	6.00%
Matching contributions vesting period	5 years
Expense attributable to the plan	$ 355	$ 308	$ 250