Accounts Receivable, Net and Supplemental Balance-Sheet Information

3 Months Ended

Mar. 31, 2012

Accounts Receivable, Net and Supplemental Balance Sheet Information [Abstract]

Accounts Receivable Net and Supplemental Balance Sheet Information [Text Block]

Accounts Receivable, Net and Supplemental Balance-Sheet Information

The following comprises accounts receivable, net, and other amounts included in the balance sheet:

Accounts receivable, net	March 31, 2012		December 31, 2011
Accounts receivable	$	81,502	$	82,076
Receivables under contractual arrangements	13,865		11,194
	95,367		93,270
Less allowances for doubtful accounts	2,518		2,475
Accounts receivable, net	$	92,849	$	90,795

Receivables under contractual arrangements consist of work-in-process in accordance with the terms of contracts, primarily with utility services customers.

Accrued expenses	March 31, 2012		December 31, 2011
Employee compensation	$	8,212	$	15,046
Accrued compensated absences	7,716		7,138
Self-insured medical claims	3,282		2,950
Customer advances, deposits	—		1,321
Taxes, other than income	2,085		2,622
Accrued litigation settlement	2,900		2,900
Other	1,800		2,146
Total	$	25,995	$	34,123