1. Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income (Numerator)
Net income	$ (485,000)	$ 402,000	$ 342,000	$ 365,000	$ 50,000	$ 12,000	$ 389,000	$ 368,000	$ 624,143	$ 818,958	$ 310,313
Less preferred stock dividends									(99,271)	(99,000)	(90,682)
Income available to common stockholders									524,872	719,958	219,631
Income available to common stockholders and assumed conversions									624,143	818,958	310,313
Shares (Denominator)
Income available to common stockholders									19,497,638	19,457,810	19,414,367
Income available to common stockholders and assumed conversions									20,077,910	20,112,278	20,094,961
Earnings per share basic
Income available to common stockholders									$ 0.03	$ 0.04	$ 0.01
Diluted earnings per share
Income available to common stockholders and assumed conversions									$ 0.03	$ 0.04	$ 0.02
Options [Member]
Income (Numerator)
Effect of dilutive securities
Shares (Denominator)
Effect of dilutive securities									213,606	287,802	313,928
Convertible Preferred Stock [Member]
Income (Numerator)
Effect of dilutive securities									$ 99,271	$ 99,000	$ 90,682
Shares (Denominator)
Effect of dilutive securities									366,666	366,666	366,666