XML 18 R42.htm IDEA: XBRL DOCUMENT

Stockholders' Equity (Summary of share-based compensation expense) (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]
Employee share-based compensation expense	$ 1,325	$ 1,900
Adjustment to fair value of liability classified awards	(66)	(170)
Total share-based compensation expense	$ 1,259	$ 1,730

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