Income (Loss) per Common Share (Tables)

9 Months Ended

Sep. 30, 2012

Income (Loss) per Common Share [Abstract]

Reconciliation of weighted-average shares used for the basic computation and that used for the diluted computation

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Weighted-average shares for basic		4,837,987		4,828,286		4,834,485		4,826,126
Dilutive effect of convertible preferred stock and stock options		—		69,615		68,944		72,316
Weighted-average shares for diluted		4,837,987		4,897,901		4,903,430		4,898,442