Retirement Plans (Benefit Payments) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
2019 - 2023	$ 2,000
Retirement Income Plan [Member]
Estimated contribution from the employer	9,600,000
2014	8,424,000
2015	9,263,000
2016	10,226,000
2017	11,245,000
2018	12,336,000
2019 - 2023	76,244,000
Retirement Life Plan [Member]
2014	372,000
2015	382,000
2016	391,000
2017	400,000
2018	407,000
2019 - 2023	$ 2,108,000