Summary of significant accounting policies (Tables)

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Company's Revenues

The revenues for each of these lines are as follows:

Three Month Period Ended March 31,	2013		2012
(in thousands, unaudited)
Refrigerant and reclamation sales	$	21,810	$	13,662
RefrigerantSide® Services		1,067		1,192
Total	$	22,877	$	14,854

Reconciliation of Shares Used to Determine Net Income Per Share

The reconciliation of shares used to determine net income per share is as follows (dollars in thousands, unaudited):

	Three Month Period Ended March 31,
	2013		2012
Net Income	$	4,469	$	2,509
Weighted average number of shares – basic		24,334,966		23,785,556
Shares underlying warrants		476,877		139,938
Shares underlying options		1,939,871		1,923,462
Weighted average number of shares outstanding – diluted		26,751,714		25,848,956