Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets Activity (Detail)

v2.4.1.9
Intangible Assets Activity (Detail) (USD $)
Feb. 28, 2015
May 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]    
Gross carrying amounts $ 3,500,000us-gaap_FiniteLivedIntangibleAssetsGross $ 3,500,000us-gaap_FiniteLivedIntangibleAssetsGross
Accumulated amortization (831,250)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization (568,750)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Total amortizable intangible assets, net 2,668,750us-gaap_FiniteLivedIntangibleAssetsNet 2,931,250us-gaap_FiniteLivedIntangibleAssetsNet
Patents currently not amortized 35,989us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill 35,989us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Carrying value of intangibles, net $ 2,704,739us-gaap_IntangibleAssetsNetExcludingGoodwill $ 2,967,239us-gaap_IntangibleAssetsNetExcludingGoodwill