Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Share-Based Compensation

Summary of stock option activity and related information

	Options	Weighted average exercise price
Outstanding, December 31, 2012	6,371	$	21.09
Granted	—	—
Exercised	6,371	$	21.09
Terminated/Cancelled	—	—
Outstanding, March 31, 2013	—	—
Exercisable, March 31, 2013	—	—