Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Share-Based Compensation Expense

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

	Three Months Ended March 31,
	2013		2012
Equity-classified awards:
Stock option awards	$	792	$	1,208
Common, deferred and restricted stock and stock unit awards	293		407
	1,085		1,615
Liability-classified awards	14		72
	$	1,099	$	1,687