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Note 7 - Investments in Joint Ventures
12 Months Ended
Aug. 31, 2013
Equity Method Investments and Joint Ventures [Abstract]  
Equity Method Investments and Joint Ventures Disclosure [Text Block]
7.           INVESTMENTS IN JOINT VENTURES

The financial statements of the Company’s foreign joint ventures are initially prepared using the accounting principles accepted in the respective joint ventures’ countries of domicile.  Amounts related to foreign joint ventures reported in the below tables and the accompanying financial statements have subsequently been adjusted to conform with accounting principles generally accepted in the United States of America in all material respects.  All material profits recorded on sales from the Company to its joint ventures have been eliminated for financial reporting purposes.

Financial information from the audited and unaudited financial statements of the Company’s joint venture in Germany, Excor Korrosionsschutz – Technologien und Produkte GmbH (EXCOR), China, NTI Asean and all of the Company’s other joint ventures, are summarized as follows:

   
August 31, 2013
 
   
TOTAL
   
EXCOR
   
China
   
All Other
 
Current assets
  $ 63,052,410     $ 25,955,136     $ 11,200,355     $ 25,896,919  
Total assets
    68,417,142       28,391,787       11,226,755       28,798,600  
Current liabilities
    16,107,597       3,572,004       3,080,118       9,455,475  
Noncurrent liabilities
    2,488,057             871,886       1,616,171  
Joint ventures’ equity
    49,821,488       24,819,783       7,274,751       17,726,954  
Northern Technologies International Corporation’s share of joint ventures’ equity
    24,702,981       12,409,893       3,637,375       8,655,713  
Northern Technologies International Corporation's share of joint ventures' undistributed earnings
  $ 22,281,510     $ 12,378,988     $ 3,587,375     $ 6,315,147  

   
August 31, 2012
 
   
TOTAL
   
EXCOR
   
NTI ASEAN
   
All Other
 
Current assets
  $ 61,973,725     $ 24,357,139     $ 15,358,967     $ 22,257,619  
Total assets
    68,585,974       26,620,589       15,522,456       26,442,929  
Current liabilities
    18,686,181       4,749,574       5,763,857       8,172,750  
Noncurrent liabilities
    4,700,458             1,055,965       3,644,493  
Joint ventures’ equity
    45,199,335       21,871,015       8,702,634       14,625,686  
Northern Technologies International Corporation’s share of joint ventures’ equity
    21,461,492       10,935,509       3,685,404       6,840,579  
Northern Technologies International Corporation's share of joint  ventures' undistributed earnings
  $ 19,403,150     $ 10,904,604     $ 3,314,445     $ 5,184,101  

   
Fiscal Year Ended August 31, 2013
   
   
TOTAL
   
EXCOR
   
China
   
All Other
 
Net sales
  $ 113,189,068     $ 36,476,544     $ 15,161,289     $ 61,551,235  
Gross profit
    52,058,609       19,470,322       7,153,395       25,434,891  
Net income
    10,650,542       7,009,897       1,157,995       2,482,650  
Northern Technologies International Corporation’s share of equity in income of joint ventures
  $ 5,237,711     $ 3,507,057     $ 579,376     $ 1,151,278  

   
Fiscal Year Ended August 31, 2012
       
   
TOTAL
   
EXCOR
   
NTI ASEAN
   
All Other
 
Net sales
  $ 111,830,961     $ 36,027,979     $ 22,035,035     $ 53,767,947  
Gross profit
    50,679,875       18,667,848       9,621,930       22,390,097  
Net income
    11,987,323       6,656,298       3,585,476       1,745,549  
Northern Technologies International Corporation’s share of equity in income of joint ventures
  $ 5,519,795     $ 3,318,213     $ 1,414,248     $ 787,333  

The Company records expenses that are directly attributable to the joint ventures on its consolidated statements of operations on the line “Expenses incurred in support of joint ventures”.  The expenses include items such as employee compensation and benefits, travel, consulting, legal and laboratory supplies and testing expenses.

During fiscal 2013, the Company obtained an additional 10% ownership interest in NTI Asean in exchange for a license agreement.  See Note 3 for additional information.

During fiscal 2012, both the Company and the other 50% owner in Harita NTI Limited agreed to receive additional equity interest in consideration for outstanding fees for services receivable of $484,545 due to each party.

The Company did not make any other joint venture investments during fiscal 2013 and fiscal 2012.