Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details of Reclassification) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Amortization of employee benefit plan items:
Amount reclassified out of accumulated other comprehensive loss	$ 1,136
Unrecognized pension and postretirement benefits
Amortization of employee benefit plan items:
Prior service cost (1)	161
Settlement expense (1)	806
Amortization of actuarial loss (1)	786
Total before tax	1,753
Income tax benefit	(617)
Amount reclassified out of accumulated other comprehensive loss	$ 1,136