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Note 7 - Financing Arrangements (Details Textual) |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Nov. 30, 2017 USD ($) | Oct. 31, 2017 USD ($) | Mar. 31, 2012 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Long-term Debt |  |  |  | $ 13,653,008 |
Payments to Acquire Businesses, Gross |  |  |  | 419,813 | $ 500,000
Business Combination, Contingent Consideration, Liability, Current |  |  |  | 100,000 |
Asset Purchase Agreement [Member] |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Current |  | $ 100,000 |  |  |
MesoScribe Technologies, Inc [Member] |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High |  |  |  | 300,000 |
MesoScribe Technologies, Inc [Member] | Asset Purchase Agreement [Member] |  |  |  |  |
Business Combination, Consideration Transferred |  | 800,000 |  |  |
Payments to Acquire Businesses, Gross |  | 500,000 |  |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High |  | $ 300,000 |  |  |
Creative Bath Products, Inc [Member] |  |  |  |  |
Purchase Commitment, Amount | $ 13,850,000 |  |  |  |
Loan [Member] |  |  |  |  |
Debt Instrument, Periodic Payment |  |  |  | $ 62,777.60 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 3.9148% |
Debt Instrument, Face Amount |  |  |  | $ 10,387,500 |
HSBC Bank Mortgage Loan [Member] | HSBC Bank [Member] |  |  |  |  |
Debt Instrument, Number of Payments |  |  | 120 |  |
Debt Instrument, Periodic Payment |  |  | $ 25,000 |  |
Long-term Debt |  |  |  | $ 3,000,000 | $ 3,300,000
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 3.3118% | 2.561%
HSBC Bank Mortgage Loan [Member] | HSBC Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 1.75% |
HSBC Bank [Member] | Loan [Member] |  |  |  |  |
Debt Instrument, Number of Payments | 60 |  |  |  |
Debt Instrument, Periodic Payment | $ 62,777.60 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.9148% |  |  |  |
Debt Instrument, Face Amount | $ 10,387,500 |  |  |  |
HSBC Bank [Member] | Revolving Credit Facility [Member] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 7,000,000 |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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