Pension Plans (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Plans, Defined Benefit
Defined contribution plan disclosures
Expenses recorded under the plan	$ 73,000	$ 60,000	$ 60,000
Employer contributions	65,000	55,000	0
Liability for benefits	73,000	65,000
Defined Contribution 401 K Plan
Defined contribution plan disclosures
Expenses recorded under the plan	$ 119,000	$ 110,000	$ 108,000