Summary of significant accounting policies (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Company's Revenues

The revenues for each of these lines are as follows:

Years Ended December 31,	2012		2011
(in thousands)
Refrigerant and reclamation sales	$	52,220	$	40,346
RefrigerantSide® Services		4,227		3,976
Total	$	56,447	$	44,322

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):

	Years Ended December 31,
	2012		2011
Net income	$	12,801	$	1,034
Weighted average number of shares – basic		23,906,706		23,780,814
Shares underlying warrants		315,494		10,966
Shares underlying options		2,131,760		1,011,267
Weighted average number of shares outstanding – diluted		26,353,960		24,803,047