Quarterly report pursuant to Section 13 or 15(d)

Equity (Details)

Equity (Details) (Common Stock [Member], USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Common Stock [Member]
Class of Stock [Line Items]  
Issued stock in connection with public offering, net, shares 1,542,389
Shares issued, price per share $ 3.10
Net proceeds after deducting associated expenses $ 4.5