Note 9 - Operating Leases (Details Textual)			12 Months Ended
	Mar. 15, 2021 USD ($) a	Jan. 01, 2021 USD ($) ft²	Dec. 31, 2020 USD ($) ft²	Dec. 31, 2019 USD ($)	May 31, 2016
Operating Lease, Expense			$ 360,000	$ 450,000
Operating Lease, Weighted Average Remaining Lease Term (Year)			6 years 313 days
Operating Lease, Weighted Average Discount Rate, Percent			4.52%
Operating Lease, Fixed Operating Expense			$ 245,000
Operating Lease, Interest Expense			115,000
Office Space, Executive Offices and Operations [Member] | San Antonio, TX [Member]
Operating Lease, Expense			$ 136,713	199,702
Office Space, Executive Offices and Operations [Member] | San Antonio, TX [Member] | Subsequent Event [Member]
Operating Leases, Area Leased (Square Foot) | a	2,734
Sales Offices and Operations [Member] | Nashville, TN [Member]
Operating Leases, Area Leased (Square Foot) | ft²			3,794
Operating Lease, Expense			$ 81,474	112,108
Output Solutions Employees and Warehouse Operations [Member] | San Antonio, TX [Member]
Operating Leases, Area Leased (Square Foot) | ft²			22,400
Lessee, Operating Lease, Remaining Lease Term (Month)			3 years 270 days
Lease for Technology Organization [Member] | Austin, TX [Member] | Subsequent Event [Member]
Operating Leases, Area Leased (Square Foot) | ft²		1,890
Operating Lease, Annual Expense		$ 55,755
Lessee, Operating Lease, Term of Contract (Month)		2 years 30 days
Lease of Select Computer Equipment [Member]
Operating Lease, Expense			$ 12,729	$ 25,000
Lessor, Operating Lease, Term of Contract (Month)					3 years
Maximum [Member] | Office Space, Executive Offices and Operations [Member] | San Antonio, TX [Member]
Operating Leases, Area Leased (Square Foot) | ft²			10,535
Maximum [Member] | Office Space, Executive Offices and Operations [Member] | San Antonio, TX [Member] | Subsequent Event [Member]
Operating Lease, Annual Expense	$ 60,148
Maximum [Member] | Output Solutions Employees and Warehouse Operations [Member] | San Antonio, TX [Member]
Operating Lease, Annual Expense			$ 133,703
Minimum [Member] | Office Space, Executive Offices and Operations [Member] | San Antonio, TX [Member] | Subsequent Event [Member]
Operating Lease, Annual Expense	$ 56,047
Minimum [Member] | Output Solutions Employees and Warehouse Operations [Member] | San Antonio, TX [Member]
Operating Lease, Annual Expense			$ 123,554