Net Income Per Common Share (Tables)

9 Months Ended

Sep. 30, 2012

Net Income Per Common Share [Abstract]

Summary of Basic and diluted weighted average common shares

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2012		2011		2012		2011
Basic weighted average common shares outstanding		22,398		22,620		22,573		22,672
Weighted average common equivalent shares		460		462		445		507
Diluted weighted average common shares outstanding		22,858		23,082		23,018		23,179
Options excluded from diluted weighted average share calculation as effect would have been anti-dilutive		967		447		644		209