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Income Taxes (Details Textual)
12 Months Ended
Dec. 31, 2015
Income Tax Disclosure [Abstract]  
State and foreign income tax returns subject to examination period (in years) 3 years
State and foreign income tax returns subject to examination period maximum (in years) 5 years
Period amended federal returns remain subject to examination 1 year
Increase decrease in percentage of stock ownership (as a percent) 50.00%