Stock-Based Compensation; Changes in Equity (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Shares Outstanding at the end of period (in shares)	204,000
Shares, Exercisable (in shares)	150,400
Weighted Average Exercise Price, Outstanding at the end of period (in dollars per share)	$ 5.20
Weighted Average Exercise Price, Exercisable (in dollars per share)	$ 5.10
Weighted Average Remaining Contractual Life, Outstanding (in years)	1 year 6 months
Weighted Average Remaining Contractual Life, Exercisable (in years)	1 year 3 months 18 days
Aggregate Intrinsic Value Outstanding (in dollars)	$ 21,830
Aggregate Intrinsic Value, Exercisable (in dollars)	$ 21,830
Employee Stock Option [Member]
Shares Outstanding, beginning of period (in shares)	214,500
Shares, Granted (in shares)	0
Shares, Cancelled (in shares)	10,500
Shares, Exercised (in shares)	0
Shares Outstanding at the end of period (in shares)	204,000	214,500
Shares, Exercisable (in shares)	150,400
Weighted Average Exercise Price, Outstanding, beginning of period (in dollars per share)	$ 5.20
Weighted Average Exercise Price, Granted (in dollars per share)	0
Weighted Average Exercise Price, Cancelled (in dollars per share)	0
Weighted Average Exercise Price, Exercised (in dollars per share)	0
Weighted Average Exercise Price, Outstanding at the end of period (in dollars per share)	5.20	$ 5.20
Weighted Average Exercise Price, Exercisable (in dollars per share)	$ 5.10
Weighted Average Remaining Contractual Life, Outstanding (in years)	1 year 6 months	2 years 1 month 6 days
Weighted Average Remaining Contractual Life, Exercisable (in years)	1 year 3 months 18 days
Aggregate Intrinsic Value Outstanding (in dollars)	$ 25,960
Aggregate Intrinsic Value Outstanding (in dollars)	21,830	$ 25,960
Aggregate Intrinsic Value, Exercisable (in dollars)	$ 21,830