Warrants and Stock Options and Grant Plans (Details Textual)	12 Months Ended			1 Months Ended		1 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Mar. 31, 2000 Stock option plan [Member]	Mar. 21, 2000 Stock option plan [Member]	May 31, 2010 2010 incentive plan [Member]	May 18, 2010 2010 incentive plan [Member]	Dec. 31, 2012 Restricted stock plan [Member]	Dec. 31, 2011 Restricted stock plan [Member]
Warrants and Stock Options and Grant Plans (Textual)
Number of stock option available for grant					436,424		366,025
Option expiration period				10 years		10 years
Adjusted percentage of stock dividends							10.00%
Number of shares authorized under the restricted stock plan								13,310	13,310
Shares issued under provision of issuance of shares of restricted stock						79,860
Expected volatility rate	44.04%	26.76%	26.76%
Risk-free interest rate	1.86%	3.35%	3.25%
Life expectancy of the options	10 years	10 years	10 years
Assumed dividend rate	0.00%	0.00%	0.00%