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Note 6 - Debt (Details Textual) - USD ($) $ / shares in Units, $ in Thousands																3 Months Ended	9 Months Ended	10 Months Ended	12 Months Ended
	Jun. 02, 2019	Sep. 30, 2018	Jul. 27, 2018	Feb. 06, 2018	Aug. 30, 2017	Mar. 14, 2017	Dec. 31, 2016	Sep. 02, 2016	Jul. 21, 2016	Apr. 05, 2016	Mar. 21, 2016	Jan. 28, 2016	Feb. 06, 2015	Jan. 22, 2015	Nov. 13, 2014	Sep. 30, 2018	Sep. 30, 2018	Jun. 02, 2017	Dec. 31, 2017	Dec. 31, 2016	Aug. 15, 2017	Jul. 25, 2017	Mar. 08, 2017	Aug. 06, 2016	Feb. 04, 2015
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		18,355,017														18,355,017	18,355,017		15,855,017
Loss on Stock Purchase Guarantees																				$ 3,210
Common Stock, Shares Subscribed but Unissued, Return																					778,385
Common Stock, Shares Subscribed but Unissued		1,528,384														1,528,384	1,528,384
Revolving Credit Facility [Member] \| Midcap Funding X Trust [Member]
Debt Instrument, Term														3 years
Class of Warrant or Right, Number of Securities Called by Warrants or Rights								500,000
Warrants Not Settleable in Cash, Fair Value Disclosure														$ 130
Debt Instrument, Fee Amount														540
Line of Credit Facility, Maximum Borrowing Capacity								$ 17,000						$ 15,000
Line of Credit Facility, Potential Maximum Borrowing Capacity								$ 20,000
Percentage of Unused Line Fee Per Month								0.50%
Percentage of Management Fee Per Month								1.20%
Debt Instrument, Basis Spread on Variable Rate								5.00%
Debt Instrument, Interest Rate, Effective Percentage		7.77%														7.77%	7.77%
Related Party August 2017 Note Payable to Great Harbor LLC [Member]
Long-term Debt, Total		$ 3,000														$ 3,000	$ 3,000		$ 3,000
Minimum Liquidity				$ 1,000
Related Party Debt November 2014 Note Payable to Golisano Holdings LLC (Formerly Penta Mezzanine SBIC Fund I, L.P.) [Member]
Long-term Debt, Total		7,119														7,119	7,119		6,509
Debt Instrument, Face Amount			$ 4,000
Related-Party Debt January 2015 Note Payable to Golisano Holdings LLC (Formerly Payable to JL-BBNC Mezz Utah, LLC) [Member]
Long-term Debt, Total		$ 3,857														$ 3,857	$ 3,857		3,171
Debt Instrument, Face Amount			4,000
Great Harbor Capital, LLC [Member]
Proceeds from Notes Payable, Total			$ 5,000
Golisano Holdings LLC [Member]
Debt Instrument, Periodic Payment, Total															$ 360
Debt Instrument, Interest Rate, Stated Percentage													8.00%	8.00%	12.00%								8.00%
Debt Instrument, Face Amount													$ 2,000
Debt Instrument, Periodic Payment, Principal													90	$ 250
Proceeds from Notes Payable, Total														$ 5,000	$ 8,000
Debt Instrument Periodic Principal Payments Due in Next Four Quarters													110		440
Debt Instrument Periodic Principal Payments Due Thereafter													130		$ 520
Class of Warrant or Right, Number of Securities Called by Warrants or Rights														2,329,400	4,960,740										434,809
Warrants Not Settleable in Cash, Fair Value Disclosure													250	$ 4,389	$ 3,770
Debt Instrument, Fee Amount													$ 90	152	$ 273
Increased Debt Instrument Periodic Payment														$ 350
Debt Instrument, Maturity Date													Nov. 13, 2019	Feb. 13, 2020	Nov. 13, 2019
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]
Common Stock Subscription Price Per Share																								$ 2.29
Stock Price Guarantee Payment																								$ 3,210
Common Stock, Shares Subscribed but Unissued, Return		778,385														778,385	778,385
Common Stock, Shares Subscribed but Unissued		749,999														749,999	749,999
Common Stock, Shares Subscribed but Unissued, Option to Purchase Shares Price																					$ 140
Common Stock, Shares Subscribed but Unissued, Option to Purchase Shares																					764,192
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%								8.50%
Debt Instrument, Face Amount				$ 2,000	$ 3,000		$ 2,500				$ 7,000	$ 2,500								$ 2,500
Debt Instrument, Periodic Payment, Principal											$ 292	$ 104
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
Debt Instrument, Term																	3 years
Debt Instrument, Obligation Termination, Stock Price Trigger		5.06														5.06	5.06
Long-term Debt, Total																						$ 3,267
Debt Instrument, Interest Rate, Stated Percentage		8.50%														8.50%	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
Proceeds from Related Party Debt																$ 0			$ 0	$ 4,770
Debt Instrument, Maturity Date									Jan. 28, 2019
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						$ 3,267	$ 2,500				$ 7,000	$ 2,500								$ 2,500
Debt Instrument, Periodic Payment, Principal											$ 292	$ 104
Debt Instrument, Maturity Date						Dec. 30, 2019	Dec. 30, 2019				Mar. 21, 2019	Jan. 28, 2019
Debt Instrument, Date of First Required Payment											Apr. 21, 2017
Unsecured Promissory Note [Member] \| Huntington Holdings, LLC [Member]
Debt Instrument, Interest Rate, Stated Percentage																					8.50%
Debt Instrument, Face Amount																					$ 3,200
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total																		$ 50
Unsecured Promissory Note [Member] \| Huntington Holdings, LLC [Member] \| Scenario, 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
Proceeds from Related Party Debt																				$ 4,770
Debt Instrument, Maturity Date									Jan. 28, 2019
Secured Debt [Member] \| Golisano Holdings LLC [Member]
Debt Instrument, Interest Rate, Stated Percentage				8.50%
Debt Instrument, Face Amount				$ 2,000
Notes Payable Maturing in March 2019 [Member] \| JL [Member]
Debt Instrument, Interest Rate, Stated Percentage										8.50%
Debt Instrument, Periodic Payment, Principal										$ 21
Notes Payable to Bank, Noncurrent										$ 500