Investments (Schedule of Amortized Cost, Fair Value, Credit Rating) (Details) - USD ($)

6 Months Ended

Jun. 30, 2015

Dec. 31, 2014

Amortized Cost

$ 20,652,034

$ 19,289,551

Us States and Political Subdivisions Debt Securities [Member]

Amortized Cost

679,612

Estimated Fair Value

662,218

States and Political Subdivisions General Obligations [Member] | Us States and Political Subdivisions Debt Securities [Member] | Maricopa County Arizona School District no Thirty One [Member]

Amortized Cost

337,675

Estimated Fair Value

$ 331,043

Credit Rating

AA-

States and Political Subdivisions Special Revenue [Member] | Us States and Political Subdivisions Debt Securities [Member] | South Dakota EDL Enhancement Fdg Corp [Member]

Amortized Cost

$ 173,267

Estimated Fair Value

$ 171,051

Credit Rating

A-

States and Political Subdivisions Special Revenue [Member] | Us States and Political Subdivisions Debt Securities [Member] | Jefferson Cnty Co Sch Dist [Member]

Amortized Cost

$ 168,670

Estimated Fair Value

$ 160,124

Credit Rating

AA