Stock Warrants (Details) (Warrant [Member], USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Warrant [Member]
Stock Warrants [Abstract]
Beginning balance (in shares)	84,000	354,546
Beginning balance (in dollars per share)	$ 1.21	$ 1.21
Stock warrants granted (in shares)	0	0
Stock warrants granted (in dollars per share)	$ 0	$ 0
Stock warrants expired (in shares)	0	0
Stock warrants expired (in dollars per share)	$ 0	$ 0
Stock warrants exercised (in shares)	0	(270,546)
Stock warrants exercised (in dollars per share)	$ 0	$ 1.21
Ending balance (in shares)	84,000	84,000
Ending balance (in dollars per share)	$ 1.21	$ 1.21