Accounts Payable and Accrued Expenses:

3 Months Ended

Mar. 31, 2013

6.	Accounts Payable and Accrued Expenses:

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


	March 31, 2013		December 31, 2012

Accounts payable	$	9,584	$	13,812
Accrued salaries and bonuses		53,742		160,495
Accrued payroll taxes and benefits		29,236		36,176
Accrued contingent consideration		18,896		16,109
Accrued professional liabilities		17,865		17,466
Other accrued expenses		21,402		11,603

	$	150,725	$	255,661

The net decrease in accrued salaries and bonuses of $106.8 million, from $160.5 million at December 31, 2012 to $53.7 million at March 31, 2013, is primarily due to the payment of performance-based incentive compensation, principally to the Company’s physicians, partially offset by performance-based incentive compensation accrued during the three months ended March 31, 2013. A majority of the Company’s payments for performance-based incentive compensation is paid annually in the first quarter.