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Note 9 - Fair Value Measurements (Tables)
6 Months Ended
Sep. 30, 2014
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment, and may affect the valuation of fair value assets and liabilities and their placement within the fair value hierarchy levels.

September 30, 2014
 
Level I
   
Level II
   
Level III
   
Total
 
Total Assets
 
$
-
   
$
-
   
$
-
   
$
-
 
                                 
Warrant liability
   
-
     
-
     
460,389
     
460,389
 
Total Liabilities
 
$
-
   
$
-
   
$
460,389
   
$
460,389
 
March 31, 2014
 
Level I
   
Level II
   
Level III
   
Total
 
Total Assets
 
$
-
   
$
-
   
$
-
   
$
-
 
                                 
Warrant liability
   
-
     
-
     
354,309
     
354,309
 
Total Liabilities
 
$
-
   
$
-
   
$
354,309
   
$
354,309
 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] The following table provides a summary of the changes in fair value of our Level 3 financial liabilities from March 31, 2014 through September 30, 2014, as well as the portion of gains or losses included in income attributable to unrealized gains or losses related to the liability held at September 30, 2014:

Level 3 Reconciliation
 
Beginning at beginning of period
   
Gains and losses for the period
(realized and unrealized)
   
Purchases, issuances, sales
and settlements, net
 
Transfers in or out of Level 3
   
Balance at the end of period
 
                               
Warrant liability
   
354,309
     
106,080
     
-
     
-
     
460,389
 
Total Liabilities
 
$
354,309
   
$
106,080
   
$
-
   
$
-
   
$
460,389
 
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block] The common stock warrants were not issued with the intent of effectively hedging any future cash flow, fair value of any asset, liability or any net investment in a foreign corporation. The warrants do not qualify for hedge accounting, and, as such, all changes in the fair value of these warrants are recognized as other income/expense in the statement of operations until such time as the warrants are exercised or expire. Since these common stock warrants do not trade in an active securities market, the Company recognizes a warrant liability and estimates the fair value of these warrants using the Black-Scholes options model using the following assumptions:

Date of
Warrant
   
Expiration 
Date
   
Number of
Warrants
   
Exercise 
Price
   
Fair Market Value
Per Share
   
Expected
Volatility
   
Remaining 
Life in Years
   
Risk Free 
Interest Rate
   
Warrant 
Liability
 
 
09-10-2010
     
09-10-2019
     
136,920
   
$
6.70
   
$
6.70
     
28.51
%
   
9
     
2.81
%
 
$
267,848
 
 
09-10-2010
     
09-10-2015
     
10,416
   
$
6.70
   
$
6.70
     
28.51
%
   
5
     
1.59
%
 
$
13,808
 
 
07-26-2012
     
09-10-2019
     
50,000
   
$
3.35
   
$
3.90
     
42.04
%
   
7
     
0.94
%
 
$
66,193
 
 
07-26-2012
     
09-10-2019
     
20,000
   
$
3.35
   
$
3.90
     
42.04
%
   
7
     
0.94
%
 
$
26,477
 
 
11-20-2012
     
09-10-2019
     
20,000
   
$
3.56
   
$
3.50
     
42.45
%
   
6.83
     
1.09
%
 
$
21,441
 
 
02-14-2013
     
09-10-2019
     
20,000
   
$
3.58
   
$
3.80
     
41.25
%
   
6.58
     
1.43
%
 
$
23,714
 
 
07-12-2013
     
09-10-2019
     
20,000
   
$
3.33
   
$
3.32
     
40.26
%
   
6.17
     
2.00
%
 
$
19,523
 
 
08-12-2013
     
09-10-2019
     
20,000
   
$
3.69
   
$
3.69
     
40.20
%
   
6.08
     
2.01
%
 
$
21,587
 
Date of 
Warrant
   
Expiration
Date
   
Number of
Warrants
   
Exercise 
Price
   
Fair Market Value
Per Share
   
Expected
Volatility
 
Remaining
Life in Years
   
Risk Free
Interest Rate
 
Warrant
Liability
 
 
09-10-2010
     
09-10-2019
     
136,920
   
$
6.70
   
$
4.42
     
43.35
%
   
5.45
     
1.73
%
 
$
123,564
 
 
09-10-2010
     
09-10-2015
     
10,416
   
$
6.70
   
$
4.42
     
43.35
%
   
1.45
     
0.44
%
 
$
2,498
 
 
07-26-2012
     
09-10-2019
     
50,000
   
$
3.35
   
$
4.42
     
43.35
%
   
5.45
     
1.73
%
 
$
77,626
 
 
07-26-2012
     
09-10-2019
     
20,000
   
$
3.35
   
$
4.42
     
43.35
%
   
5.45
     
1.73
%
 
$
31,050
 
 
11-20-2012
     
09-10-2019
     
20,000
   
$
3.56
   
$
4.42
     
43.35
%
   
5.45
     
1.73
%
 
$
29,892
 
 
02-14-2013
     
09-10-2019
     
20,000
   
$
3.58
   
$
4.42
     
43.35
%
   
5.45
     
1.73
%
 
$
29,310
 
 
07-12-2013
     
09-10-2019
     
20,000
   
$
3.33
   
$
4.42
     
43.35
%
   
5.45
     
1.73
%
 
$
31,163
 
 
08-12-2013
     
09-10-2019
     
20,000
   
$
3.69
   
$
4.42
     
43.35
%
   
5.45
     
1.73
%
 
$
29,206
 
Date of 
Warrant
   
Expiration
Date
   
Number of
Warrants
   
Exercise
Price
   
Fair Market Value
Per Share
   
Expected
Volatility
   
Remaining
Life in Years
   
Risk Free
Interest Rate
 
Warrant
Liability
 
 
09-10-2010
     
09-10-2019
     
136,920
   
$
6.70
   
$
5.34
     
41.86
%
   
4.95
     
1.78
%
 
$
160,990
 
 
09-10-2010
     
09-10-2015
     
10,416
   
$
6.70
   
$
5.34
     
41.86
%
   
0.95
     
0.13
%
 
$
3,199
 
 
07-26-2012
     
09-10-2019
     
50,000
   
$
3.35
   
$
5.34
     
41.86
%
   
4.95
     
1.78
%
 
$
100,668
 
 
07-26-2012
     
09-10-2019
     
20,000
   
$
3.35
   
$
5.34
     
41.86
%
   
4.95
     
1.78
%
 
$
40,267
 
 
11-20-2012
     
09-10-2019
     
20,000
   
$
3.56
   
$
5.34
     
41.86
%
   
4.95
     
1.78
%
 
$
38,818
 
 
02-14-2013
     
09-10-2019
     
20,000
   
$
3.58
   
$
5.34
     
41.86
%
   
4.95
     
1.78
%
 
$
38,085
 
 
07-12-2013
     
09-10-2019
     
20,000
   
$
3.33
   
$
5.34
     
41.86
%
   
4.95
     
1.78
%
 
$
40,409
 
 
08-12-2013
     
09-10-2019
     
20,000
   
$
3.69
   
$
5.34
     
41.86
%
   
4.95
     
1.78
%
 
$
37,953