Stock Options and Warrants (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Number of Options
Balance at the beginning of the period (in shares)	837,675	838,175
Expired (in shares)	(177,100)	(500)
Balance at the end of the period (in shares)	660,575	837,675
Exercisable at the end of the period (in shares)	660,575
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 3.80	$ 3.75
Expired (in dollars per share)	$ 4.15	$ 5.40
Balance at the end of the period (in dollars per share)	$ 3.74	$ 3.80
Exercisable at the end of the period (in dollars per share)	$ 3.74
Minimum
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 2.00	$ 2.00
Expired (in dollars per share)	$ 4.11	$ 3.00
Balance at the end of the period (in dollars per share)	$ 2.00	$ 2.00
Exercisable at the end of the period (in dollars per share)	$ 2.00
Maximum
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 22.00	$ 22.0
Expired (in dollars per share)	$ 22.00	$ 12.00
Balance at the end of the period (in dollars per share)	$ 15.00	$ 22.00
Exercisable at the end of the period (in dollars per share)	$ 15.00