Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Benefit Plans

Schedule of contributions made to multi-employer plans

Contributions we made to the multi-employer plans for the years ended December 31, 2012, 2011 and 2010 are included in the table below (amounts in thousands):

Benefit Plan	2012		2011		2010
Pension Plan	$	2,506	$	2,264	$	1,835
Health Plan		8,020		6,919		5,754
Other plans		6,025		5,111		4,143
Total plan contributions	$	16,551	$	14,294	$	11,732