XML 14 R46.htm IDEA: XBRL DOCUMENT v3.2.0.727
Income Taxes (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
Subsidiary
Jun. 30, 2014
USD ($)
Operating Loss Carryforwards [Line Items]        
Net operating losses or credits utilization period     1 year  
Period with in which cumulative ownership change     3 years  
Gross unrecognized tax benefits $ 16,400,000   $ 16,400,000  
Unrecognized tax benefits interest and penalties 0      
Unrecognized tax benefits accrued interest and penalties 0   $ 0  
Number of partially owned subsidiaries | Subsidiary     3  
Federal income tax benefit or expense $ 0 $ 0 $ 0 $ 0
Minimum [Member]        
Operating Loss Carryforwards [Line Items]        
Change in cumulative ownership percentage (in hundredths)     50.00%