Stockholders' Equity of the Company (Tables)

9 Months Ended

Sep. 30, 2014

Class of Stock [Line Items]

Schedule of Stockholders Equity [Table Text Block]

The following table sets forth information regarding sales of our common stock under our at-the-market offering program for the nine months ended September 30, 2014:

	Nine months  ended September 30, 2014
	(in millions, except share and per share data)
Shares of common stock sold during the year	370,700
Weighted average price per common share	$	61.01
Aggregate gross proceeds	$	22.6
Aggregate net proceeds after sales agent compensation	$	22.3