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Continuous Equity Offering Continuous Equity Offering (Notes)
3 Months Ended
Mar. 31, 2013
Continuous Equity Offering [Abstract]  
Equity Offering Program [Text Block]
Continuous Equity Offering

The Company has a continuous equity offering program in place for up to $200 million of equity. During the three months ended March 31, 2013, the Company sold 642,000 common shares through this program. The net proceeds from the offering of $24.3 million were used to pay down outstanding borrowings under the Company's unsecured credit facility and for general corporate purposes.