INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2014

3.	INTANGIBLE ASSETS

Intangible assets primarily consists of a patent for the IsoBLOX™ technology, which was acquired in February 2013 for a purchase price of $2,100. The intangible assets are being amortized over a fifteen-year period on a straight-line basis. Amortization expense of $35 and $70 has been recorded for the three and six months ended June 30, 2014 and $18 and $53 has been recorded for the three and six months ended June 30, 2013, respectively. The net carrying value of the intangible assets as of June 30, 2014 and December 31, 2013 was $1,909 and $1,979, respectively.