OTHER COMMITMENTS AND CONTINGENCIES:	12 Months Ended
Apr. 30, 2020
OTHER COMMITMENTS AND CONTINGENCIES:
OTHER COMMITMENTS AND CONTINGENCIES:	(15) OTHER COMMITMENTS AND CONTINGENCIES: Pursuant to a support agreement, the Company agreed through May 2023 to pay up to $250,000 to the Smithsonian Institution if PCD fails to provide certain required services to the Smithsonian Institution. The parent company of PCD has guaranteed the payment of this amount to the Company. In March 2020, the World Health Organization declared the novel strain of coronavirus (COVID-19) a global pandemic and recommended containment and mitigation measures worldwide. Subsequently, the COVID-19 pandemic has continued to spread and various state and local governments have issued or extended "shelter-in-place" orders, which have impacted and restricted various aspects of the Company's operations. While the Company cannot reasonably estimate the length or severity of this pandemic or if there will be additional periods of increases or spikes in the number of COVID-19 cases, future mutations or related strains of the virus in areas in which the Company operates, an extended economic slowdown could materially impact the Company's consolidated financial position, consolidated results of operations, and consolidated cash flows in fiscal year 2021 or beyond.

(15) OTHER COMMITMENTS AND CONTINGENCIES:

Pursuant to a support agreement, the Company agreed through May 2023 to pay up to $250,000 to the Smithsonian Institution if PCD fails to provide certain required services to the Smithsonian Institution.

The parent company of PCD has guaranteed the payment of this amount to the Company.

In March 2020, the World Health Organization declared the novel strain of coronavirus (COVID-19) a global pandemic and recommended containment and mitigation measures worldwide. Subsequently, the COVID-19 pandemic has continued to spread and various state and local governments have issued or extended "shelter-in-place" orders, which have impacted and restricted various aspects of the Company's operations. While the Company cannot reasonably estimate the length or severity of this pandemic or if there will be additional periods of increases or spikes in the number of COVID-19 cases, future mutations or related strains of the virus in areas in which the Company operates, an extended economic slowdown could materially impact the Company's consolidated financial position, consolidated results of operations, and consolidated cash flows in fiscal year 2021 or beyond.