Benefit Plans (Employee Stock Purchase Plan) (Details) - Employee Stock - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2010
2010 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Required minimum tenure with company to be eligible for plan			1 year
Maximum annual purchase per employee			$ 25,000
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum annual purchase per employee	$ 25,000
Discount from market price at purchase date		15.00%
Share-based compensation expense		$ 58,000
Purchases under plan	0