Earnings Per Share (Tables)

6 Months Ended

Jun. 15, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table reconciles the number of shares outstanding for the second quarters and first halves of fiscal 2013 and 2012, respectively, to the number of weighted average basic shares outstanding and the number of weighted average diluted shares outstanding for the purposes of calculating basic and diluted earnings per share (in thousands, except per share data):

	Second Quarter Ended,				First Half Ended,
	June 15, 2013		June 16, 2012		June 15, 2013		June 16, 2012
Net income	$	1,057	$	1,218	$	637	$	1,488
Less: Income attributable to noncontrolling interest	26		—		46		—
Net income attributable to Heritage-Crystal Clean, Inc. available to common stockholders	$	1,031	$	1,218	$	591	$	1,488
Weighted average basic shares outstanding	18,138		16,689		18,125		15,588
Dilutive shares for share–based compensation plans	318		451		324		462
Weighted average diluted shares outstanding	18,456		17,140		18,449		16,050
Net income per share: basic	$	0.06	$	0.07	$	0.03	$	0.10
Net income per share: diluted	$	0.06	$	0.07	$	0.03	$	0.09