Quarterly report pursuant to Section 13 or 15(d)

Available For Sale ("AFS") Securities (Details)

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Available For Sale ("AFS") Securities (Details) (USD $)
1 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2013
Jun. 30, 2012
Schedule of Available-for-sale Securities [Line Items]      
Proceeds from sale of available for sale investments   $ 5,937,000 $ 0
Gain on sale of available-for-sale securities 100,000    
Common Stock
     
Schedule of Available-for-sale Securities [Line Items]      
Gross unrealized gains 1,400,000 1,400,000  
Proceeds from sale of available for sale investments   5,900,000  
AFS securities $ 7,100,000 $ 7,100,000