Stockholders Equity Note Disclosure [Text Block] | Stockholders’ Equity Preferred Stock The Company has authorized 1,000,000 0.001 Common Stock Issuances On April 14, 2014, the Company entered into a securities purchase agreement pursuant to which the Company issued an aggregate of 2,139,287 427,858 10.50 15.0 598,500 4,000 On May 4, 2015, the Company closed an underwritten public offering of 7,582,418 4.55 32.2 2011 Plan The Company maintains the 2011 Long-Term Incentive Plan (the “2011 Plan”) that provides for the granting of stock options, restricted stock units (“RSUs”), restricted stock and other awards to employees, directors and others. A total of 1,828,571 150,670 2014 Plan On April 10, 2014 and June 5, 2014, the Company’s Board of Directors and the Company’s shareholders approved the 2014 Long-Term Incentive Plan (the “2014 Plan”), respectively. The 2014 Plan provides for the granting of stock options, RSUs, restricted stock and other awards to employees, directors and others. On February 26, 2015 and May 6, 2015, the Company’s Board of Directors and the Company’s shareholders approved an amendment to the 2014 Plan to increase the total number of shares of common stock authorized for issuance under the 2014 Plan by an additional 3,500,000 2,000,000 5,500,000 2,936,655 Stock-Based Compensation Year Ended December 31, 2015 2014 Options $ 5,942,058 $ 7,815,411 Warrants - 210,160 Restricted stock units - 180,715 Restricted stock 2,691,729 2,523,760 Total stock-based compensation $ 8,633,787 $ 10,730,046 For the year ended December 31, 2015, $ 364,000 8.3 200,000 10.5 Restricted Stock The following table summarizes the restricted stock issued as compensation during the years ended December 31, 2015 and 2014: Issuance Grantee Shares Vesting Grant Date Date Type Issued Term Value 01/06/14 Officer 369,395 [1] $ 2,582,072 01/17/14 Consultant 1,107 Immediate 10,007 01/27/14 Consultant 13,000 Immediate 118,300 03/06/14 Employee 8,300 [2] 74,700 03/09/14 Consultant 1,108 Immediate 10,005 03/21/14 Consultant 1,136 Immediate 10,008 04/02/14 Consultant 1,219 Immediate 10,008 05/29/14 Consultant 1,000 Immediate 7,000 06/16/14 Consultant 1,525 Immediate 10,004 06/18/14 Consultant 1,558 Immediate 10,002 07/01/14 Consultant 1,743 Immediate 10,005 2014- Restricted Stock - Total 401,091 $ 2,852,111 02/06/15 Officers 600,000 [3] $ 3,738,000 06/15/15 Officer 120,000 [4] 630,000 2015 - Restricted Stock - Total 720,000 $ 4,368,000 [1] Vests in equal quarterly installments, with one-eighth vesting on January 6, 2014 and the remaining vesting on the first day of each calendar quarter thereafter. [2] 2,425 1,725 [3] Vests in three equal annual installments, with one-third vesting on each of February 6, 2016, February 6, 2017 and February 6, 2018. [4] Vests in four equal installments, with one-fourth vesting on the date of grant and one-fourth vesting on each of June 15, 2016, June 15, 2017 and June 15, 2018. On March 14, 2014, in connection with the resignation of the chief executive officer of a wholly-owned subsidiary of the Company, the Company accelerated the vesting of 17,688 157,000 As of December 31, 2015, there was $ 2.0 1.6 Number of Weighted Total Grant Non-vested, December 31, 2014 35,376 $ 2.19 $ 77,387 Granted 401,091 $ 7.11 2,852,111 Vested (248,318) $ 6.47 (1,607,402) Forfeited - $ - - Non-vested, December 31, 2014 188,149 $ 7.03 $ 1,322,096 Granted 720,000 $ 6.07 4,368,000 Vested (216,424) $ 6.76 (1,464,071) Forfeited - - - Non-vested, December 31, 2015 691,725 $ 6.11 $ 4,226,025 Warrants See Common Stock Issuances above for details of warrants issued in connection with equity offerings. See Note 9 - Debt Senior Secured Term Loan Facility for details associated with a warrant issued in connection with debt. On April 11, 2014, the Company entered into a letter agreement with certain of the holders of warrants to purchase shares of the Company’s common stock that were granted pursuant to that certain securities purchase agreement, dated November 18, 2013, by and among the Company and the investors signatory thereto. The Company received approximately $ 5.3 930,313 265,000 2,500 5.69 1.5 During the year ended December 31, 2014, away from exercised warrants discussed above, the Company issued an aggregate of 258,295 400,137 353,137 47,000 199,000 4.24 241,060 3.02 65,362 2.19 93,715 2.0 During the year ended December 31, 2015, the Company issued an aggregate of 8,970 15,999 9,142 2.19 45,000 There were no compensatory warrants issued during the years ended December 31, 2015 and 2014. As of December 31, 2015, there was no unrecognized stock-based compensation expense related to compensatory warrants. Number of Weighted Weighted Intrinsic Value Outstanding, December 31, 2013 3,822,557 $ 5.12 Issued 427,858 10.50 Exercised (1,330,450) 5.03 Cancelled (244,844) 7.88 Outstanding, December 31, 2014 2,675,121 $ 5.76 Issued 750,000 5.51 Exercised (15,999) 2.19 Cancelled (36,572) 7.88 Outstanding, December 31, 2015 3,372,550 $ 5.70 3.1 $ - Exercisable, December 31, 2015 3,372,550 $ 5.70 3.1 $ - Warrants Outstanding Warrants Exercisable Exercise Price Outstanding Average Exercisable $ 2.19 92,573 1.8 92,573 3.02 74,286 1.1 74,286 3.50 2,286 1.3 2,286 4.24 780,191 2.4 780,191 4.38 188,444 2.8 188,444 4.81 8,889 2.8 8,889 5.51 750,000 4.4 750,000 5.69 1,040,880 2.9 1,040,880 8.75 7,143 0.2 7,143 10.50 427,858 3.3 427,858 3,372,550 3.1 3,372,550 As of December 31, 2015 and 2014, warrants to purchase an aggregate of 816,287 75,429 5.24 2.19 Stock Options Options - 2014 Grants During 2014, ten-year options to purchase an aggregate of 1,273,520 3.89 9.05 7.00 7.1 736,500 268,000 269,020 Details of the grants with the more significant grant date values are as follows: (1) On January 6, 2014, a ten-year option to purchase 91,520 506,000 6.99 22,800 (2) On March 6, 2014, a ten-year option to purchase 70,000 9.00 210,000 1.5 23,333 Options 2015 Grants During 2015, ten-year options to purchase an aggregate of 1,905,000 2.38 6.23 8.0 1,818,000 87,000 4,500 90,000 1,810,500 (1) On February 6, 2015, ten-year options to purchase an aggregate of 745,000 3.6 6.23 (2) On May 29, 2015, ten-year options to purchase an aggregate of 455,000 1.8 4.95 440,000 15,000 (3) On August 3, 2015, ten-year options to purchase an aggregate of 270,000 1.0 5.08 Options Summary Data Year Ended December 31, 2015 2014 Risk free interest rate 1.19% - 2.11 % 1.39% - 2.38 % Expected term (years) 5.00-6.50 5.00 - 10.00 Expected volatility 93.70% - 98.25 % 100.56% - 102.63 % Expected dividends 0.00 % 0.00 % The risk-free interest rate is based on rates of treasury securities with the same expected term as the options. The Company uses the "simplified method" to calculate the expected term of employee and director stock-based options. The expected term used for consultants is the contractual life. The Company is utilizing an expected volatility figure based on a review of the Company’s historical volatility, over a period of time, equivalent to the expected life of the instrument being valued. The expected dividend yield is based upon the fact that the Company has not historically paid dividends, and does not expect to pay dividends in the near future. Option forfeitures are estimated at the time of valuation and reduce expense ratably over the vesting period. This estimate will be adjusted periodically based on the extent to which actual option forfeitures differ, or are expected to differ, from the previous estimate, when it is material. The Company estimated forfeitures related to options at annual rates ranging from 0 5 The weighted average estimated fair value of the options granted during the years ended December 31, 2015 and 2014 was $ 4.18 5.60 During the year ended December 31, 2014, the Company issued an aggregate of 306,403 333,876 57,143 276,733 1.4 4.38 252,217 5.47 11,428 6.34 22,857 6.56 47,374 943,000 During the year ended December 31, 2015, the Company issued an aggregate of 75,919 75,919 332,000 4.38 86,000 As of December 31, 2015, there was $ 5.4 1.6 Number of Weighted Weighted Intrinsic Value Outstanding, December 31, 2013 4,985,586 $ 6.47 Granted 1,273,520 7.00 Exercised (333,876) 4.86 Forfeited (1,107,570) 7.19 Outstanding, December 31, 2014 4,817,660 $ 6.56 Granted 1,905,000 5.38 Exercised (75,919) 4.38 Forfeited (416,192) 5.96 Outstanding, December 31, 2015 6,230,549 $ 6.26 7.4 $ - Exerciseable, December 31, 2015 3,296,198 $ 6.09 6.2 $ - Options Outstanding Options Exercisable Range of Weighted Outstanding Weighted Average Weighted Exercisable $3.28-$3.99 $ 3.35 512,971 $ 3.36 7.4 407,304 $4.00-$4.99 4.58 1,488,505 4.41 3.8 894,502 $5.00-$5.99 5.28 676,760 5.44 5.9 228,687 $6.00-$6.99 6.59 2,212,796 6.77 7.6 1,045,141 $7.00-$7.99 7.75 31,000 7.75 8.3 10,333 $8.00-$8.99 8.74 780,065 8.74 6.7 540,174 $9.00-$9.99 9.00 264,833 9.00 6.8 113,828 $10.00-$26.69 10.96 263,619 11.01 7.2 56,229 6,230,549 6.2 3,296,198 |