Note 12 - Related Party Transactions	6 Months Ended
Jun. 30, 2020
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	*12.* Related Party Transactions Board of Directors and Outside Counsel A member of the Company’s Board of Directors is a partner at the Company’s outside counsel. During the three months ended June 30, 2020 and 2019, the Company incurred expenses of $184,000 and $122,000, respectively, related to services provided by the outside counsel. During the six months ended June 30, 2020 and 2019, the Company incurred expenses of $303,000 and $235,000, respectively, related to services provided by the outside counsel. On June 30, 2020 the Company’s outstanding payables and accrued expenses included an approximate $106,000 liability to the outside counsel. Board of Directors-Consulting Agreement On October 13, 2018, the Company, entered into a consulting agreement with Dr. Eric A. Rose, a member, and former Executive Chairman, of the Company’s Board of Directors. Under the agreement, the consulting services will include assisting the Company on expanded indications for TPOXX® and other business development opportunities as requested by the Company. The term of the agreement is for two years, with compensation for such services at an annual rate of $200,000. During the three months ended June 30, 2020, the Company incurred $50,000 related to services under this agreement. During the six months ended June 30, 2020, the Company incurred $100,000 related to services under this agreement. As of June 30, 2020, the Company’s outstanding payables and accrued expenses included a $50,000 liability associated with this agreement. Real Estate Leases On May 26, 2017, the Company and MacAndrews & Forbes Incorporated (“M&F”) entered into a ten-year Office Lease agreement (the “New HQ Lease”), pursuant to which the Company agreed to lease 3,200 square feet at 31 East 62^nd Street, New York, New York. The Company is utilizing premises leased under the New HQ Lease as its new corporate headquarters. The Company's rental obligations consist of a fixed rent of $25,333 per month in the first sixty-three months of the term, subject to a rent abatement for the first six months of the term. From the first day of the sixty-fourth month of the term through the expiration or earlier termination of the lease, the Company's rental obligations consist of a fixed rent of $29,333 per month. In addition to the fixed rent, the Company will pay a facility fee in consideration of the landlord making available certain ancillary services, commencing on the first anniversary of entry into the lease. The facility fee will be $3,333 per month for the second year of the term and increasing by five percent each year thereafter, to $4,925 per month in the final year of the term. On July 31, 2017, the Company and M&F entered into a Termination of Sublease Agreement (the “Old HQ Sublease Termination Agreement”), pursuant to which the Company and M&F agreed to terminate the sublease dated January 9, 2013 for 6,676 square feet of rental square footage located at 660 Madison Avenue, Suite 1700, New York, New York (such sublease being the “Old HQ Sublease” and the location being the “Old HQ”). Effectiveness of the Old HQ Sublease Termination Agreement was conditioned upon the commencement of a sublease for the Old HQ between M&F and a new subtenant (the “Replacement M&F Sublease”), which occurred on August 2, 2017. The Old HQ Sublease Termination Agreement obligates the Company to pay, on a monthly basis, an amount equal to the discrepancy (the “Rent Discrepancy”) between the sum of certain operating expenses and taxes (“Additional Rent”) and fixed rent under the overlease between M&F and the landlord at 660 Madison Avenue and the sum of Additional Rent and fixed rent under the Replacement M&F Sublease. Under the Old HQ Sublease Termination Agreement, the Company and M&F release each other from any liability under the Old HQ Sublease. Under the Old HQ Sublease, the Company was obligated to pay fixed rent of approximately $60,000 per month until August 2018 and approximately $63,400 per month thereafter until the Old HQ Sublease expiration date of August 31, 2020. Additionally, the Company was obligated to pay certain operating expenses and taxes ("Additional Rent"), such Additional Rent being specified in the overlease between M&F and the landlord at 660 Madison Avenue (the "Old HQ Overlease"). Under the Replacement M&F Sublease, the subtenant’s rental obligations were excused for the first two (2) months of the lease term (“Rent Concession Period”). Thereafter, the subtenant was obligated to pay fixed rent of $36,996 per month for the first twelve (12) months, and is obligated to pay $37,831 per month for the next 12 months, and $38,665 per month until the scheduled expiration of the Replacement M&F Sublease on August 24, 2020. In addition to fixed rent, the subtenant is also obligated to pay, pursuant to the Replacement M&F Sublease, a portion of the Additional Rent specified in the Old HQ Overlease. For the time period between August 2, 2017 and August 31, 2020 (the expiration date of the Old HQ Sublease), the Company estimates that it will pay a total of approximately $0.9 million combined in fixed rent and additional amounts payable under the New HQ Lease and a total of approximately $1.1 million in Rent Discrepancy under the Old HQ Sublease Termination Agreement, for a cumulative total of $2.0 million. In contrast, fixed rent and estimated Additional Rent under the Old HQ Sublease, for the aforementioned time period, would have been a total of approximately $2.4 million if each of the New HQ Lease, Replacement M&F Sublease and Old HQ Sublease Termination Agreement had not been entered into by each of the parties thereto. Because amounts such as operating expenses and taxes may vary, the foregoing totals can only be estimated at this time and are subject to change. As a result of the above-mentioned transactions, the Company discontinued usage of Old HQ in the third quarter of 2017. As such, during the year ended December 31, 2017 the Company recorded a loss of approximately $1.1 million in accordance with Accounting Standards Codification (“ASC”) 420, Exit or Disposal Obligations. This loss primarily represented the discounted value of estimated Rent Discrepancy payments to occur in the future, and included costs related to the termination of the old HQ Sublease. The Company also wrote-off approximately $0.1 million of leasehold improvements and furniture and fixtures related to the Old HQ.

Note 12 - Related Party Transactions

6 Months Ended

Jun. 30, 2020

Board of Directors and Outside Counsel

A member of the Company’s Board of Directors is a partner at the Company’s outside counsel. During the three months ended June 30, 2020 and 2019, the Company incurred expenses of $184,000 and $122,000, respectively, related to services provided by the outside counsel. During the six months ended June 30, 2020 and 2019, the Company incurred expenses of $303,000 and $235,000, respectively, related to services provided by the outside counsel. On June 30, 2020 the Company’s outstanding payables and accrued expenses included an approximate $106,000 liability to the outside counsel.

Board of Directors-Consulting Agreement

On October 13, 2018, the Company, entered into a consulting agreement with Dr. Eric A. Rose, a member, and former Executive Chairman, of the Company’s Board of Directors. Under the agreement, the consulting services will include assisting the Company on expanded indications for TPOXX® and other business development opportunities as requested by the Company. The term of the agreement is for two years, with compensation for such services at an annual rate of $200,000. During the three months ended June 30, 2020, the Company incurred $50,000 related to services under this agreement. During the six months ended June 30, 2020, the Company incurred $100,000 related to services under this agreement. As of June 30, 2020, the Company’s outstanding payables and accrued expenses included a $50,000 liability associated with this agreement.

Real Estate Leases

On May 26, 2017, the Company and MacAndrews & Forbes Incorporated (“M&F”) entered into a ten-year Office Lease agreement (the “New HQ Lease”), pursuant to which the Company agreed to lease 3,200 square feet at 31 East 62^nd Street, New York, New York. The Company is utilizing premises leased under the New HQ Lease as its new corporate headquarters. The Company's rental obligations consist of a fixed rent of $25,333 per month in the first sixty-three months of the term, subject to a rent abatement for the first six months of the term. From the first day of the sixty-fourth month of the term through the expiration or earlier termination of the lease, the Company's rental obligations consist of a fixed rent of $29,333 per month. In addition to the fixed rent, the Company will pay a facility fee in consideration of the landlord making available certain ancillary services, commencing on the first anniversary of entry into the lease. The facility fee will be $3,333 per month for the second year of the term and increasing by five percent each year thereafter, to $4,925 per month in the final year of the term.

On July 31, 2017, the Company and M&F entered into a Termination of Sublease Agreement (the “Old HQ Sublease Termination Agreement”), pursuant to which the Company and M&F agreed to terminate the sublease dated January 9, 2013 for 6,676 square feet of rental square footage located at 660 Madison Avenue, Suite 1700, New York, New York (such sublease being the “Old HQ Sublease” and the location being the “Old HQ”).

Effectiveness of the Old HQ Sublease Termination Agreement was conditioned upon the commencement of a sublease for the Old HQ between M&F and a new subtenant (the “Replacement M&F Sublease”), which occurred on August 2, 2017. The Old HQ Sublease Termination Agreement obligates the Company to pay, on a monthly basis, an amount equal to the discrepancy (the “Rent Discrepancy”) between the sum of certain operating expenses and taxes (“Additional Rent”) and fixed rent under the overlease between M&F and the landlord at 660 Madison Avenue and the sum of Additional Rent and fixed rent under the Replacement M&F Sublease. Under the Old HQ Sublease Termination Agreement, the Company and M&F release each other from any liability under the Old HQ Sublease.

Under the Old HQ Sublease, the Company was obligated to pay fixed rent of approximately $60,000 per month until August 2018 and approximately $63,400 per month thereafter until the Old HQ Sublease expiration date of August 31, 2020. Additionally, the Company was obligated to pay certain operating expenses and taxes ("Additional Rent"), such Additional Rent being specified in the overlease between M&F and the landlord at 660 Madison Avenue (the "Old HQ Overlease").

Under the Replacement M&F Sublease, the subtenant’s rental obligations were excused for the first two (2) months of the lease term (“Rent Concession Period”). Thereafter, the subtenant was obligated to pay fixed rent of $36,996 per month for the first twelve (12) months, and is obligated to pay $37,831 per month for the next 12 months, and $38,665 per month until the scheduled expiration of the Replacement M&F Sublease on August 24, 2020. In addition to fixed rent, the subtenant is also obligated to pay, pursuant to the Replacement M&F Sublease, a portion of the Additional Rent specified in the Old HQ Overlease.

For the time period between August 2, 2017 and August 31, 2020 (the expiration date of the Old HQ Sublease), the Company estimates that it will pay a total of approximately $0.9 million combined in fixed rent and additional amounts payable under the New HQ Lease and a total of approximately $1.1 million in Rent Discrepancy under the Old HQ Sublease Termination Agreement, for a cumulative total of $2.0 million. In contrast, fixed rent and estimated Additional Rent under the Old HQ Sublease, for the aforementioned time period, would have been a total of approximately $2.4 million if each of the New HQ Lease, Replacement M&F Sublease and Old HQ Sublease Termination Agreement had not been entered into by each of the parties thereto. Because amounts such as operating expenses and taxes may vary, the foregoing totals can only be estimated at this time and are subject to change.

As a result of the above-mentioned transactions, the Company discontinued usage of Old HQ in the third quarter of 2017. As such, during the year ended December 31, 2017 the Company recorded a loss of approximately $1.1 million in accordance with Accounting Standards Codification (“ASC”) 420, Exit or Disposal Obligations. This loss primarily represented the discounted value of estimated Rent Discrepancy payments to occur in the future, and included costs related to the termination of the old HQ Sublease. The Company also wrote-off approximately $0.1 million of leasehold improvements and furniture and fixtures related to the Old HQ.