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Represents the number of options to purchase shares subscribed but unissued.

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Represents the return of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument after maturity or in the event of default.

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The trailing ninety day volume weighted average closing price of the entity's common stock which would be required to be attained in order to terminate payment obligations

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The potential maximum borrowing capacity under a line of credit facility.

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The loss recognized on stock purchase guarantees.

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The minimum amount of liquidity required.

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The percentage of collateral applied to the line of credit as a management fee, per month.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Incremental percentage increase (decrease) in the stated rate on a debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the required periodic payments including both interest and principal payments.

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Amount of the required periodic payments applied to principal.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash inflow from a borrowing supported by a written promise to pay an obligation.

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The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

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Note 6 - Debt (Details Textual) - USD ($)															1 Months Ended	6 Months Ended	10 Months Ended	12 Months Ended
Note 6 - Debt (Details Textual) - USD ($)	Jun. 02, 2019	Apr. 22, 2019	Dec. 04, 2018	Jul. 27, 2018	Feb. 06, 2018	Aug. 30, 2017	Dec. 31, 2016	Sep. 02, 2016	Jul. 21, 2016	Mar. 21, 2016	Jan. 28, 2016	Feb. 06, 2015	Jan. 22, 2015	Nov. 13, 2014	Jul. 31, 2014	Jun. 30, 2019	Jun. 02, 2017	Dec. 31, 2016	Jan. 28, 2019	Jan. 22, 2019	Dec. 31, 2018	Nov. 05, 2018	Sep. 30, 2018	Aug. 15, 2017	Jul. 25, 2017	Mar. 14, 2017	Mar. 08, 2017	Aug. 06, 2016	Feb. 04, 2015
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																20,140,731					20,140,731
Loss on Stock Purchase Guarantees																		$ 3,210,000
Common Stock, Shares Subscribed but Unissued, Return																								778,385
Common Stock, Shares Subscribed but Unissued																1,528,384
Midcap Funding X Trust [Member] \| Revolving Credit Facility [Member]
Debt Instrument, Term													3 years
Class of Warrant or Right, Number of Securities Called by Warrants or Rights													500,000
Debt Instrument, Interest Rate During Period																7.50%
Line of Credit Facility, Maximum Borrowing Capacity		$ 12,000,000						$ 17,000,000					$ 15,000,000							$ 5,000,000
Line of Credit Facility, Potential Maximum Borrowing Capacity													$ 20,000,000
Percentage of Unused Line Fee Per Month								0.50%
Percentage of Management Fee Per Month								1.20%
Line of Credit Facility, Expiration Period		2 years
Debt Instrument, Fee Amount																$ 540,000
Long-term Line of Credit, Total																4,567,000
Midcap Funding X Trust [Member] \| Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate								5.00%
Related Party August 2017 Note Payable to Great Harbor LLC [Member]
Long-term Debt, Total																3,000,000					$ 3,000,000
Minimum Liquidity					$ 1,000,000
Great Harbor Capital, LLC [Member]
Debt Instrument, Interest Rate, Stated Percentage				8.50%
Proceeds from Notes Payable, Total				$ 5,000,000
Golisano Holdings LLC [Member]
Debt Instrument, Interest Rate, Stated Percentage												12.00%	12.00%	12.00%													8.00%
Debt Instrument, Face Amount												$ 2,000,000	$ 5,000,000	$ 8,000,000
Proceeds from Notes Payable, Total													$ 5,000,000	$ 8,000,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights													2,329,400	4,960,740															434,809
Debt Instrument, Maturity Date												Oct. 22, 2021
Golisano Holdings LLC [Member] \| Warrants Issued on January 22, 2015[Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights												869,618
Huntington Holdings, LLC [Member]
Long-term Debt, Total																$ 3,055
Debt Instrument, Face Amount	$ 3,200
Common Stock Subscription Price Per Share																												$ 2.29
Stock Price Guarantee Payment																												$ 3,210,000
Common Stock, Shares Subscribed but Unissued, Return																778,385
Common Stock, Shares Subscribed but Unissued																749,999
Common Stock, Shares Subscribed but Unissued, Option to Purchase Shares Price																								$ 140,000
Common Stock, Shares Subscribed but Unissued, Option to Purchase Shares																								764,192
Golisano Holdings LLC [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																							4,542,219
Notes Payable, Other Payables [Member] \| Great Harbor Capital, LLC [Member]
Debt Instrument, Interest Rate, Stated Percentage					8.50%	8.50%	8.50%			8.50%	8.50%							8.50%
Debt Instrument, Face Amount					$ 2,000,000	$ 3,000,000	$ 2,500,000			$ 7,000,000	$ 2,500,000							$ 2,500,000
Debt Instrument, Periodic Payment, Principal										$ 292,000	$ 104,000
Debt Instrument, Maturity Date				Jan. 27, 2020	Feb. 06, 2021	Aug. 29, 2020	Dec. 30, 2019			Mar. 21, 2019	Jan. 28, 2019
Debt Instrument, Date of First Required Payment										Apr. 21, 2017	Feb. 28, 2017
Notes Payable, Other Payables [Member] \| Little Harbor, LLC [Member]
Debt Instrument, Maturity Date															Jul. 25, 2017
Notes Payable, Other Payables [Member] \| Little Harbor [Member]
Debt Instrument, Periodic Payment, Total															$ 4,900,000
Debt Instrument, Term															3 years
Debt Instrument, Obligation Termination, Stock Price Trigger															5.06
Long-term Debt, Total																									$ 3,267,000
Debt Instrument, Interest Rate, Stated Percentage					8.50%
Related Party Debt July 2016 Note Payable to Little Harbor LLC [Member]
Debt Instrument, Interest Rate, Stated Percentage									8.50%
Debt Instrument, Face Amount									$ 4,770,000
Proceeds from Related Party Debt																		$ 4,770,000
Debt Instrument, Maturity Date									Jan. 28, 2019
Great Harbour Note 4 [Member]
Debt Instrument, Interest Rate, Stated Percentage																						8.50%
Debt Instrument, Face Amount																						$ 4,000,000
Unsecured Promissory Note [Member] \| Golisano Holdings LLC [Member]
Debt Instrument, Interest Rate, Stated Percentage							8.50%			8.50%	8.50%							8.50%								8.50%
Debt Instrument, Face Amount							$ 2,500,000			$ 7,000,000	$ 2,500,000							$ 2,500,000								$ 3,267,000
Debt Instrument, Maturity Date										Oct. 22, 2021	Oct. 22, 2021
Unsecured Promissory Note [Member] \| Huntington Holdings, LLC [Member]
Debt Instrument, Interest Rate, Stated Percentage																								8.50%
Debt Instrument, Face Amount																								$ 3,200,000
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total																	$ 50,000
Unsecured Promissory Note [Member] \| Huntington Holdings, LLC [Member] \| Forecast [Member]
Debt Instrument, Interest Rate, Increase (Decrease)	10.00%
Unsecured Delayed Draw Promissory Note [Member] \| Golisano Holdings LLC [Member]
Debt Instrument, Interest Rate, Stated Percentage									8.50%
Debt Instrument, Face Amount									$ 4,770,000
Proceeds from Related Party Debt																		$ 4,770,000
Debt Instrument, Maturity Date									Jan. 28, 2019
Secured Debt [Member] \| Golisano Holdings LLC [Member]
Debt Instrument, Interest Rate, Stated Percentage					8.50%														10.00%
Debt Instrument, Face Amount					$ 2,000,000
Term Loan [Member] \| Macatawa Bank [Member]
Debt Instrument, Face Amount			$ 15,000,000
Debt Instrument, Basis Spread on Variable Rate			1.00%
Debt Instrument, Interest Rate After Maturity of Event of Default Spread			3.00%
Term Loan [Member] \| Macatawa Bank [Member] \| Minimum [Member]
Debt Instrument, Interest Rate During Period			2.50%													3.43%