Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2011

Summary of Share-Based Compensation Expense

The following table summarizes the share-based compensation expense for the periods presented:

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
Stock option plans	$	1,379	$	1,276	$	2,787	$	3,385
Common, deferred and restricted stock and restricted stock unit plans		634		392		1,022		1,304
	$	2,013	$	1,668	$	3,809	$	4,689