Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings per Share [Abstract]

Dilutive shares of consolidated condensed statements of operations

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Weighted average number of shares for calculation of basic EPS – Common Stock		29,618,964		22,753,184		28,177,182		22,350,772
Impact of stock options outstanding under the 1997, 2006 and 2011 Stock Option Plans		384,383		—		498,461		—
Weighted average number of shares for calculation of diluted EPS		30,003,347		22,753,184		28,675,643		22,350,772

Common Stock issuable upon the exercise of certain stock options

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Stock options outstanding under the 1993, 1997, 2006 and 2011 Stock Option Plans		584,586		2,826,933		584,586		2,862,933
Series C Convertible Preferred Stock		2,092,291		4,284,384		2,092,291		4,284,384
		2,676,877		7,111,317		2,676,877		7,111,317