XML 68 R60.htm IDEA: XBRL DOCUMENT

Stock-Based Compensation Compensation Expense and Related Tax Benefits (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based compensation expense	$ 847	$ 713
Tax benefit	(224)	(159)
Stock-based compensation expense, net of tax	$ 623	$ 554

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References+ Details