Summary of significant accounting policies (Tables)

9 Months Ended

Sep. 30, 2015

Accounting Policies [Abstract]

Company's revenues

The revenues for each of these lines are as follows:

Nine Month Period Ended September 30,	2015		2014
(in thousands)
Refrigerant and reclamation sales	$	69,032	$	44,011
RefrigerantSide® Services		3,390		3,744
Total	$	72,422	$	47,755

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				Nine Month Period
	ended September 30,				ended September 30,
	2015		2014		2015		2014
Net income (loss)	$	1,082	$	(108)	$	5,786	$	360
Weighted average number of shares outstanding - basic		32,639,429		32,031,426		32,487,230		28,179,853
Shares underlying warrants		176,775		0		332,269		196,522
Shares underlying options		1,039,841		0		1,252,483		1,463,600
Weighted average number of shares outstanding - diluted		33,856,045		32,031,426		34,071,982		29,839,975