XML 28 R48.htm IDEA: XBRL DOCUMENT

Stock Compensation (Details 2) (USD $)	3 Months Ended		6 Months Ended
Stock Compensation (Details 2) (USD $)	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Stock Option Plan
Payments for employees' tax obligations			$ 392,000	$ 45,000
Cash received under all share-based arrangements			0
Restricted stock units
Stock Option Plan
Compensation expense	700,000	500,000	1,200,000	800,000
Fair value of restricted stock units vested			1,300,000	1,000,000
Shares withheld to cover withholding tax of unit holders			19,471	2,715
Payments for employees' tax obligations			400,000
Restricted stock units \| Maximum
Stock Option Plan
Payments for employees' tax obligations				$ 100,000

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