XML 81 R68.htm IDEA: XBRL DOCUMENT v3.3.1.900
Income Taxes - Summary of components of income tax expense (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Current:      
Federal $ (322,723) $ 408,056 $ 400,931
State (60,104) 187,266 197,671
Total current (382,827) 595,322 598,602
Deferred income (benefits) taxes:      
Federal 352,543 (253,848) (9,542)
State 275,205 (32,822) 44,795
Total deferred (benefits) taxes 627,749 (286,670) 35,252
Income tax expense $ 244,921 $ 308,652 $ 633,855