Accounts Payable and Accrued Expenses

12 Months Ended

Dec. 31, 2011

Accounts Payable and Accrued Expenses

Accounts Payable and Accrued Expenses

(7)Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consisted of the following (in thousands):

	December 31,
	2011		2010
Trade accounts payable	$	10,481	$	8,567
Accrued salaries, vacation and benefits	14,517		10,174
Other accrued expenses	13,075		10,886
Accrued contingent consideration	2,539		3,062
Negative cash book balance	1,888		5
	$	42,500	$	32,694