Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2011

Other Liabilities Disclosure [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued Expenses and Other Current Liabilities (in thousands):

December 31,	2011		2010
Payroll and related employee benefits	$	36,447	$	32,209
Accrued insurance	43,014		29,253
Performance guarantees	37,255		32,314
Loss job reserves	12,429		10,082
Other	37,645		46,915
Total	$	166,790	$	150,773