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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2015
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Income tax expense consists of:
 
 
 
Current
 
Deferred
 
Total
 
 
 
 
 
 
 
 
 
Year ended December 31, 2015:
 
 
 
 
 
 
 
 
 
 
U.S. federal
 
$
-
 
$
-
 
$
-
 
State and local
 
 
200
 
 
 
 
 
200
 
 
 
$
200
 
$
-
 
$
200
 
Year ended December 31, 2014:
 
 
 
 
 
 
 
 
 
 
U.S. federal
 
$
-
 
$
-
 
$
-
 
State and local
 
 
200
 
 
-
 
 
200
 
 
 
$
200
 
$
-
 
$
200
 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Income tax expense was $200 for each of the years ended December 31, 2015 and 2014 and differed from the amounts computed by applying the U.S. federal income tax rate of 34% to pretax income from continuing operations as a result of the following:
  
 
 
December 31,
 
 
 
2015
 
2014
 
 
 
 
 
 
 
Computed "expected" tax expense (benefit)
 
$
(6,190,781)
 
$
(6,926,642)
 
Increase (reduction) in income taxes resulting from:
 
 
 
 
 
 
 
Change in valuation allowance
 
 
6,691,992
 
 
7,748,579
 
Adjustment of tax attributes due to change in ownership
 
 
-
 
 
(127,572)
 
State and local income taxes, net of federal income
 
 
 
 
 
 
 
tax benefit
 
 
132
 
 
132
 
Stock expense
 
 
102,221
 
 
45,097
 
Research and development tax credits
 
 
(452,609)
 
 
(743,186)
 
Orphan drug tax credit
 
 
(155,452)
 
 
-
 
Other, net
 
 
4,697
 
 
3,792
 
 
 
$
200
 
$
200
 
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2015 and 2014 are presented below.
 
 
 
December 31,
 
 
 
2015
 
2014
 
 
 
 
 
 
 
Deferred tax assets:
 
 
 
 
 
 
 
Stock-based compensation
 
$
1,713,608
 
$
1,851,668
 
Net operating loss carryforwards
 
 
23,677,332
 
 
17,479,654
 
Employee benefits
 
 
59,472
 
 
41,568
 
Research and development tax credits
 
 
2,052,662
 
 
1,419,165
 
Orphan drug tax credits
 
 
485,789
 
 
-
 
Other deductible tempory differences
 
 
215,638
 
 
97,656
 
Total gross deferred tax assets
 
 
28,204,501
 
 
20,889,711
 
Less valuation allowance
 
 
(28,200,857)
 
 
(20,886,811)
 
Net deferred tax assets
 
 
3,644
 
 
2,900
 
Deferred tax liabilities:
 
 
 
 
 
 
 
Plant and equipment
 
 
(3,644)
 
 
(2,900)
 
Total gross deferred tax liabilities
 
 
(3,644)
 
 
(2,900)
 
Net deferred tax liabilities
 
$
-
 
$
-
 
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
A reconciliation of the beginning and ending amount of total unrecognized tax contingencies, excluding interest and penalties, for the years ended December 31, 2015 and 2014 are as follows:
 
 
 
 
December 31
 
 
 
 
2015
 
 
2014
 
Balance, beginning of year
 
$
-
 
$
-
 
 
 
 
 
 
 
 
 
Balance, end of year
 
$
-
 
$
-