Note 7 - Leases and Deferred Rent (Details Textual)	Jun. 30, 2019 ft²
Facility in Gainesville [Member]
Area of Real Estate Property	5,000
Lessee, Operating Lease, Renewal Term	10 years
Facility in Salt Lake City [Member]
Area of Real Estate Property	21,443
Lessee, Operating Lease, Renewal Term	5 years
Warehouse in Shenzhen, China [Member]
Area of Real Estate Property	10,700
Facility in Austin, Texas [Member[
Area of Real Estate Property	7,070
Facility in Zaragoza, Spain [Member]
Area of Real Estate Property	3,068
Facility in Chennai, India [Member]
Area of Real Estate Property	6,175
Warehouse in Salt Lake City, Utah [Member]
Area of Real Estate Property	40,000