Summary of significant accounting policies (Tables)

6 Months Ended

Jun. 30, 2012

Summary of Geographic Information Relating to Sources, by Nation, of Company's Total Net Revenues and Long-lived Tangible Assets

The table below summarizes geographic information relating to the sources, by nation, of the Company’s total revenues for the six months ended June 30, 2012 and 2011 and long-lived tangible assets as of June 30, 2012 and December 31, 2011 (dollars in thousands):

	For The Six Months Ended June 30,
	2012		% of Total			2011		% of Total
Revenue
United States	$	2,777		97	%	$	3,151		100	%
Canada		94		3	%		—		0	%
Total International		94		3	%		—		0	%
Total	$	2,871		100	%	$	3,151		100	%

	As of June 30,					As of December 31,
	2012		% of Total			2011		% of Total
Long-lived assets
United States	$	7,549		100	%	$	8,276		100	%
Canada		32		0	%		—		0	%
Total International		32		0	%		—		0	%
Total	$	7,581		100	%	$	8,276		100	%