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Note 2 - Summary of Significant Accounting Policies (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Jan. 01, 2019 | Dec. 31, 2018
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Operating Lease, Right-of-Use Asset | $ 2,778,977 |  | $ 2,778,977 |  | $ 3,130,000 | $ 0
Operating Lease, Liability | 2,806,506 |  | 2,806,506 |  | $ 3,130,000 |
Accounts Receivable, Credit Loss Expense (Reversal) |  |  | (214,610) | $ 2,298,488 |  |
Research and Development Expense | 29,852 | $ 7,985 |  |  |  |
Income Tax Expense (Benefit) | (11,915) | (942,267) | (782,362) | (505,074) |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 2,400 |  | 2,400 |  |  | 619,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | 1,003 | 67,949 | 616,203 | 4,949 |  |
Unrecognized Tax Benefits | 109,308 |  | 109,308 |  |  | 722,054
Deferred Tax Liabilities, Other | 1,820,000 |  | 1,820,000 |  |  | 2,010,000
Revenues | $ 9,322,836 | $ 16,747,827 | $ 24,577,846 | $ 63,159,929 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in Shares) | 1,021,524 | 836,534 | 1,021,524 | 836,534 |  |
Number of Operating Segments |  |  | 1 |  |  |
Customer Concentration Risk [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Accounts Receivable, before Allowance for Credit Loss, Current | $ 6,892,589 | $ 44,212,605 | $ 6,892,589 | $ 44,212,605 |  |
Customer Concentration Risk [Member] | Revenue Benchmark [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage | 65.00% |  | 60.00% | 36.00% |  |
Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage | 46.00% | 74.00% | 79.00% | 84.00% |  |
Accounts Receivable, before Allowance for Credit Loss | $ 8,264,427 | $ 18,651,339 | $ 8,264,427 | $ 18,651,339 |  |
Accounts Payable | 1,857 | 3,043,782 | 1,857 | 3,043,782 |  |
Continuing Operations [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 5,136 | 2,128,579 | (214,610) | 2,298,488 |  |
Research and Development Expense |  |  | 85,124 | 86,790 |  |
Income Tax Expense (Benefit) | (12,000) | 942,000 | (782,000) | 505,000 |  |
Unrecognized Tax Benefits | 109,000 |  | 109,000 |  |  | $ 1,340,000
Advertising Expense | $ 24,371 | $ 9,754 | $ 163,065 | 554,070 |  |
Warrant [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) |  |  | 858,334 |  |  |
Restricted Stock [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) |  |  | 25,000 |  |  |
Share-based Payment Arrangement, Option [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) |  |  | 1,385,000 |  |  |
Diamond Bar [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Goodwill, Impairment Loss |  |  | $ 0 | $ 0 |  |
Major Customer A [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage | 53.00% | 17.00% | 48.00% | 18.00% |  |
Major Customer B [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage | 12.00% |  | 12.00% | 18.00% |  |
Major Vendor A [Member] | Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage | 27.00% | 39.00% | 39.00% | 33.00% |  |
Major Vendor C [Member] | Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage |  | 11.00% | 21.00% | 21.00% |  |
Major Vendor B [Member] | Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage | 13.00% | 24.00% | 19.00% | 30.00% |  |
Shipping and Handling [Member] |  |  |  |  |  |
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |  |  |
Revenues | $ 548 | $ (347) | $ 1,411 | $ (6,624) |  |

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