Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2012

Supplemental Cash Flow Information

Schedule of cash paid for interest and income taxes

	Years Ended December 31
	2012		2011		2010
Interest	$	57,669	$	126,999	$	127,378
Income taxes, net of refunds	$	4,960,408	$	3,793,454	$	5,522,702