Multiemployer Benefit Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Multiemployer Plans [Line Items]
Multiemployer Plans Period Contributions Significance Of Contributions	false
Multiemployer Pension Plans [Member]
Multiemployer Plans [Line Items]
Multiemployer Plan, Period Contributions	$ 138	$ 196	$ 215
Multiemployer plan period contributions from discontinuing operations		61	75
Multiemployer Health Plans [Member]
Multiemployer Plans [Line Items]
Multiemployer Plan, Period Contributions	499	734	731
Multiemployer plan period contributions from discontinuing operations		$ 250	$ 251