Related party transactions (Tables)

12 Months Ended

Dec. 31, 2013

Related party transactions

Schedule of amounts incurred to companies that are principally owned by executives, directors or stockholders of the Company or their families

	Year ended December 31,
	2013		2012		2011
Rent	$	422,882	$	500,785	$	487,677
Consulting and professional fees		56,986		132,103		74,246