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Note 8 - Notes Payable and Capital Leases - Long-term Debt (Details) (Parentheticals) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Loan With Officer [Member] |  |
Stated Rate |  | 6.25%
Mortgages [Member] |  |
Effective Rate |  | 4.50%
Periodic payment |  | $ 7,778
Prime rate |  | 3.75%
Variable rate |  | 0.75%
Amortization period (Year) |  | 25 years
9% Subordinated Notes [Member] |  |
Stated Rate |  | 9.00%
Maturty date description |  | Due on demand
8% Subordinated Notes [Member] |  |
Stated Rate |  | 8.00%
Maturty date description |  | Due on demand
Prime + 2% Subordinated Notes [Member] |  |
Effective Rate |  | 5.75%
Prime rate |  | 3.75%
Variable rate |  | 2.00%
Maturty date description |  | Due on demand
4% Subordinated Notes [Member] |  |
Stated Rate | 4.00% |
Prime + .25% Note Payable [Member] | CTI Europe [Member] |  |
Effective Rate | 3.50% | 3.50%
Prime rate | 3.25% | 3.25%
Variable rate | 0.25% | 0.25%
Maturty date description | Due 2015 | Due 2015
Promissory Note With Merrick [Member] |  |
Stated Rate | 4.25% | 4.25%
Promissory Note with Schwan Leasing [Member] |  |
Stated Rate | 4.25% | 4.25%
Maturty date description | Due on demand | Due on demand
Note Payable at 11.75% [Member] | Flexo Universal [Member] |  |
Stated Rate | 11.75% | 11.75%
Maturty date description | Due 2021 | Due 2021
BMO Equity [Member] | Mezzanine Note Payable [Member] |  |
Stated Rate |  | 11.50%
Effective Rate |  | 15.56%
Maturity Date |  | Jan. 18, 2018
BMO Harris Bank N.A. [Member] | Term Loan [Member] |  |
Effective Rate |  | 4.50%
Maturity Date |  | Mar. 31, 2017
Periodic payment |  | $ 22,323
Prime rate |  | 3.75%
Variable rate |  | 0.75%
Amortization period (Year) |  | 5 years
First American Equipment Finance [Member] |  |
Periodic payment | $ 2,890 | $ 2,890
Amortization period (Year) | 5 years | 5 years
Wells Fargo [Member] | 5 Year Capital Lease [Member] |  |
Periodic payment | $ 367 | $ 367
Amortization period (Year) | 5 years | 5 years
Wells Fargo [Member] | 3 Year Capital Lease [Member] |  |
Periodic payment |  | $ 550
Amortization period (Year) |  | 3 years
PNC [Member] | Term Loan [Member] |  |
Stated Rate | 8.25% |
Periodic payment | $ 100,000 |
Amortization period (Year) | 5 years |

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