Profit Sharing Plan (Details) (Profit Sharing Plan [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Profit Sharing Plan [Member]
Profit Sharing Plan [Line Items]
Requisite service period	12 months
Requisite service hours	1000 hours
Compensation expense	$ 877	$ 1,004	$ 502