Note 4 - Debt Obligations (Details Textual)																																							1 Months Ended					2 Months Ended		3 Months Ended				4 Months Ended	9 Months Ended	12 Months Ended
		Dec. 31, 2019 USD ($) $ / shares shares	Dec. 17, 2019 USD ($) shares	Nov. 22, 2019 USD ($)	Oct. 22, 2019 USD ($) shares	Oct. 02, 2019 USD ($) shares	Aug. 12, 2019 USD ($) $ / shares	Aug. 09, 2019 USD ($) $ / shares shares	Jul. 29, 2019 USD ($) shares	Jul. 20, 2019 USD ($) $ / shares shares	Jun. 17, 2019 USD ($) $ / shares	Jun. 07, 2019 shares	Jun. 04, 2019 USD ($)	May 14, 2019 USD ($)	Apr. 18, 2019 USD ($)	Mar. 28, 2019 USD ($)	Mar. 07, 2019 USD ($)	Feb. 05, 2019 USD ($)	Jan. 31, 2019 USD ($)	Jan. 07, 2019 USD ($) $ / shares shares	Dec. 18, 2018 USD ($) shares	Nov. 11, 2018 USD ($) shares	Sep. 19, 2018 USD ($)	Sep. 12, 2018 USD ($)	Sep. 01, 2018 USD ($)	Aug. 07, 2018 USD ($)	Jul. 15, 2018 USD ($) $ / shares shares	Jul. 02, 2018 USD ($) $ / shares shares	Jun. 15, 2018 USD ($) $ / shares	Jun. 01, 2018 USD ($) $ / shares shares	Apr. 18, 2018 USD ($)	Mar. 08, 2018 USD ($)	Mar. 01, 2018 USD ($) $ / shares shares	Feb. 08, 2018 USD ($) $ / shares shares	Jan. 16, 2018 USD ($) $ / shares shares	Dec. 18, 2017 USD ($) $ / shares	Jul. 20, 2017 USD ($) $ / shares	May 24, 2017 USD ($) $ / shares	Dec. 17, 2019 USD ($)	Sep. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) shares	May 31, 2018 USD ($) $ / shares shares	Mar. 31, 2018 USD ($) $ / shares shares	Aug. 31, 2019 USD ($) $ / shares shares	Feb. 28, 2019 USD ($) $ / shares	Mar. 30, 2020 USD ($)	Dec. 31, 2019 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares	Mar. 31, 2019 USD ($)	Sep. 30, 2019 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Sep. 16, 2019 $ / shares shares	Aug. 20, 2019 USD ($)	Aug. 15, 2019 $ / shares shares	Aug. 11, 2019	Oct. 16, 2018 USD ($)	Sep. 30, 2018 $ / shares	Feb. 12, 2018 $ / shares	Dec. 31, 2017 $ / shares	Dec. 29, 2017 $ / shares
Interest Expense, Debt, Total																																																				$ 3,996,000	$ 3,494,000
Debt Conversion, Converted Instrument, Shares Issued | shares																																																				1,735,000	6,190,000
Debt Conversion, Original Debt, Amount																																										$ 4,626,000
Proceeds from Conversion Inducement																																																					$ 357,000
Induced Conversion of Convertible Debt Expense																																																					276,000
Interest Expense, Total																																																				$ 3,996,000	$ 3,494,000
Shares Issued, Price Per Share | $ / shares																																																					$ 0.25
Share Price | $ / shares		$ 0.22																																$ 0.3147													$ 0.22					$ 0.22
Long-term Debt, Excluding Current Maturities, Total		$ 700,000																																													$ 700,000					$ 700,000	$ 1,292,000
Repayments of Notes Payable																																																				915,000
Proceeds from Notes Payable, Total																																																					400,000
Proceeds from Lines of Credit, Total																																																					430,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																																										$ 0.30
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																																										4,326,358
Gain (Loss) on Extinguishment of Debt, Total																																																				(1,029,000)	(745,000)
Repayments of Lines of Credit																																																				$ 175,000
Warrants Issued in Conversion of Secured Line of Credit to Twelve Month OID Notes [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																																								$ 0.25				$ 0.17				$ 0.25		$ 0.25	$ 0.25
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																																								1,130,515				1,130,515				1,130,515		1,130,515	1,130,515
Warrants and Rights Outstanding, Term																																								5 years								5 years		5 years	5 years
Warrants In Connection With OID Notes [Member]
Class of Warrant or Right, Increase Shares Available for Purchase | shares												300,000
Warrants Issued in Connection with Conversion of Notes Due June 15, 2021 [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | shares																																																						551,471
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																																								$ 0.17								$ 0.17		$ 0.17	$ 0.17			$ 0.25
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																																								551,471								551,471		551,471	551,471
Warrants and Rights Outstanding, Term																																																						5 years
Lincoln Park Capital Fund, LLC [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																				$ 0.25
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																				250,000
Class of Warrant or Right, Expiration Term																				5 years
Vista Warrant [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																																																					$ 0.25
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																																																					1,812,000
Warrants and Rights Outstanding																								$ 488,000
Warrants Issued Concurrently to the Summer 2017 Unit Offering [Member]
Proceeds from Issuance of Units																																						$ 604,000
Warrants Issued Concurrently to the Spring 2018 Unit Offering [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																																																											$ 0.25
Interest Expense, Total																																																					$ 17,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																																																					$ 0.48						$ 0.40
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares		400,000																																													400,000					400,000	333,333
Warrant In Connection With Convertible Note [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares								$ 0.30																																																$ 0.25
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares								1,200,000
Warrants and Rights Outstanding								$ 198,000
Warrants and Rights Outstanding, Term								5 years																																																5 years
Winter 2016 Unit Offering [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																														$ 0.57
Long-term Debt, Excluding Current Maturities, Total																														$ 75,000												$ 292,000
Triton Fund Investment [Member]
Debt Instrument, Face Amount																																																										$ 300,000
Debt Instrument, Interest Rate, Stated Percentage																																																										5.00%
Bridge Loan																																																										$ 225,000
Discount On Convertible Note Payable																																																										$ 75,000
Note Payable, Maturing March 8, 2023 [Member]
Proceeds from Notes Payable, Total																																$ 50,000
Line of Credit, Maturing September 1, 2019 [Member]
Proceeds from Lines of Credit, Total																									$ 40,000								$ 390,000
Line of Credit Facility, Interest Rate During Period																																	18.00%
Number of Trading Days Prior to Interest Payment Due Date if Paid by Issuance of Common Stock																																	20 days
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period																																	10 years
Debt Instrument, Call Notice Period																																	30 days
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | shares																																	1
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																																	$ 0.35
Long-term Line of Credit, Total		$ 50,000																																													$ 50,000					$ 50,000	$ 430,000
Line of Credit, Due on Demand After September 1, 2019 [Member]
Debt Instrument, Interest Rate, Stated Percentage																																												5.00%
Debt Instrument, Fee Amount		0																																													0					0
Repayments of Lines of Credit																																															175,000
Long-term Line of Credit, Total		50,000																																													50,000					50,000
Note Payable, Maturing January 5, 2019 [Member]
Debt Instrument, Interest Rate, Stated Percentage																							12.00%
Proceeds from Notes Payable, Total																							$ 400,000
Notes Payable, Maturing September 6, 2019 [Member]
Debt Conversion, Original Debt, Amount							$ 440,000
Debt Instrument, Interest Rate, Stated Percentage							5.00%																																																		18.00%
Original Issue Discount, Percentage							25.00%
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares							$ 0.17
Gain (Loss) on Extinguishment of Debt, Total																																																				422,000
Convertible Notes Payable, Total		550,000																																													550,000					550,000
Convertible Promissory OID Note [Member]
Debt Instrument, Face Amount																																													$ 213,000
Debt Instrument, Term																																													270 days
OID Note [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																													$ 0.30
Debt Instrument, Face Amount																										$ 32,500			$ 82,500
Debt Instrument, Interest Rate, Stated Percentage																													15.00%
Proceeds from Convertible Debt																										$ 25,000			$ 75,000
Debt Instrument, Term												1 year
Debt Instrument, Unamortized Discount, Total																													$ 10,000
Convertible Twelve Months OID Notes [Member]
Debt Instrument, Face Amount																																								$ 2,794,000								$ 2,794,000		$ 2,794,000	$ 2,794,000
Debt Instrument, Interest Rate, Stated Percentage																																								5.00%								5.00%		5.00%	5.00%
Proceeds from Convertible Debt																																																		$ 2,235,000
Debt Instrument, Convertible, Beneficial Conversion Feature																																																		$ 2,235,000
Debt Instrument, Term																																																		1 year
Debt Instrument, Unamortized Discount, Total																																								$ 559,000								$ 559,000		$ 559,000	$ 559,000
Amount of Qualifying Offering Needed to Trigger Note Prepayment																																								$ 3,500,000								$ 3,500,000		$ 3,500,000	$ 3,500,000
Debt Instrument, Convertible, Conversion Price, Percentage of Lowest Closing Volume Weighted Average Price																																								70.00%								70.00%		70.00%	70.00%
Debt Instrument, Convertible, Number of Consecutive Trade Days Preceding The Conversion																																																			25 days
Convertible Twelve Months OID Notes [Member] | Thirty Four Accredited Investors [Member]
Original Issue Discount, Percentage																																								25.00%								25.00%		25.00%	25.00%
Vista Note [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares																					666,668																				208,100
Debt Conversion, Original Debt, Amount																					$ 166,667																				$ 52,000
Gain (Loss) on Extinguishment of Debt, Total																								(166,667)
Debt Instrument, Increase (Decrease), Net, Total																								$ 92,000
Notes Payable, Total																																																					550,000
Vista Capital 2017 Note [Member]
Gain (Loss) on Extinguishment of Debt, Total																																																	$ 38,000
Debt Instrument Extension Option Increase In Principal Percentage																10.00%
Two Year Convertible Note [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																																					$ 0.42
Debt Instrument, Face Amount																																					$ 440,000
Debt Instrument, Interest Rate, Stated Percentage																																					12.00%
Proceeds from Convertible Debt																																					$ 400,000
Debt Instrument, Unamortized Discount, Total																																					$ 171,000
Debt Instrument, Discount Percent																																					10.00%
Debt Instrument, Convertible, Number of Equity Instruments																																					2,000
Conversion of Accrued Interest into Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares										384,980
Debt Instrument, Convertible, Conversion Price | $ / shares										$ 0.27
Debt Conversion, Original Debt, Accrued Interest Amount										$ 106,600
Convertible Note Related to Second Investment From Crossover Capital [Member]
Debt Instrument, Face Amount											$ 90,000
Proceeds from Convertible Debt											$ 77,000
Original Issue Discount, Percentage											10.00%
Debt Instrument, Convertible, Conversion Price, Percentage of Lowest Closing Bid Price											70.00%
Debt Instrument, Convertible, Number of Consecutive Trade Days Prior to Conversion Date											25 days
Debt Instrument, Convertible, Beneficial Conversion Feature											$ 134,000
Payments of Debt Issuance Costs											$ 5,000
Convertible Note To EMA Financial, LLC [Member]
Debt Instrument, Face Amount													$ 110,000
Debt Instrument, Interest Rate, Stated Percentage													10.00%
Proceeds from Convertible Debt													$ 95,000
Original Issue Discount, Percentage													10.00%
Debt Instrument, Convertible, Conversion Price, Percentage of Lowest Closing Bid Price													70.00%
Debt Instrument, Convertible, Number of Consecutive Trade Days Prior to Conversion Date													25 days
Debt Instrument, Convertible, Beneficial Conversion Feature													$ 77,000
Debt Instrument, Term													270 days
Payments of Debt Issuance Costs													$ 5,000
Convertible Note To EMA Financial, LLC [Member] | Maximum [Member]
Debt Instrument, Convertible, Days to Prepay Following Effective Date													90 days
Debt Instrument, Convertible, Prepayment Penalty													24.00%
Convertible Note To EMA Financial, LLC, First 90 days [Member]
Debt Instrument, Convertible, Prepayment Penalty													125.00%
Convertible Note To EMA Financial, LLC, Second 90 days [Member]
Debt Instrument, Convertible, Prepayment Penalty													130.00%
Summer 2017 Unit Offering [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares																						333,334																				2,372,817
Debt Instrument, Convertible, Conversion Price | $ / shares																																						$ 0.42																						$ 0.30		$ 0.394
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares																																						$ 0.65																						$ 0.48
Convertible Notes Payable, Total		25,000																				$ 100,000																				$ 478,000					25,000					25,000	25,000
Debt Conversion, Converted Instrument, Shares Issued for Principal | shares																																										1,595,670
Debt Conversion, Converted Instrument, Shares Issued for Accrued Interest | shares																																										777,146
Convertible Notes, Maturing April 20, 2021 [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																																											$ 0.30
Long-term Debt, Excluding Current Maturities, Total	[1]	100,000																																													100,000					100,000	100,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																																											333,333
Convertible Notes Payable, Total		100,000																																													100,000					100,000
Proceeds from Issuance of Units																																											$ 100,000
Long-term Debt, Gross																																																					100,000
Convertible Note, Maturing August 9, 2021 [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares								$ 0.30
Debt Instrument, Face Amount								$ 600,000
Long-term Debt, Excluding Current Maturities, Total		600,000																																													600,000					600,000
Proceeds from Convertible Debt								$ 600,000
Original Issue Discount, Percentage								15.00%
FirstFire Purchase Agreement [Member]
Stock Issued During Period, Value, Commitment Fee																																		$ 11,000
Stock Issued During Period, Additional Commitment Shares, New Issues | shares																																		36,536
Convertible Notes Payable [Member] | Bellridge Capital, LP [Member]
Debt Instrument, Face Amount															$ 220,000																$ 220,000
Debt Instrument, Interest Rate, Stated Percentage															10.00%																10.00%
Proceeds from Convertible Debt															$ 188,000
Original Issue Discount, Percentage															10.00%																10.00%
Debt Instrument, Fee Amount															$ 10,000																$ 10,000
Debt Instrument, Convertible, Conversion Price, Percentage of Lowest Closing Bid Price															70.00%																70.00%
Debt Instrument, Convertible, Number of Consecutive Trade Days Prior to Conversion Date															25 days																25 days
Debt Instrument, Convertible, Beneficial Conversion Feature															$ 120,000																$ 120,000
Repayments of Notes Payable						$ 220,000
Debt Instrument, Convertible, Prepayment Penalty, Amount						$ 69,000
Convertible Notes Payable [Member] | Tangiers Global [Member]
Debt Instrument, Face Amount																	$ 495,000	$ 330,000
Short-term Debt, Total																	554,000
Proceeds from Convertible Debt																	$ 150,000	$ 300,000
Original Issue Discount, Percentage																		10.00%
Debt Instrument, Convertible, Conversion Price, Percentage of Lowest Closing Bid Price																			75.00%
Debt Instrument, Convertible, Number of Consecutive Trade Days Prior to Conversion Date																			25 days
Debt Instrument, Convertible, Beneficial Conversion Feature																			$ 185,000
Debt Instrument, Convertible, Interest Rate on Remaining Principal																			12.00%
Debt Instrument, Convertible, Aggregate Principal Amount																			$ 495,000
Convertible Notes Payable [Member] | Vista Capital [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																																				$ 0.394
Debt Instrument, Face Amount																																				$ 500,000
Debt Instrument, Interest Rate, Stated Percentage																																				5.00%
Proceeds from Notes Payable, Total																																				$ 500,000
Convertible Notes Payable [Member] | OID Note [Member]
Original Issue Discount, Percentage																																													25.00%
Convertible Notes Payable [Member] | Convertible Notes, Mature June 15, 2021 [Member]
Debt Instrument, Face Amount																																								$ 125,000								$ 125,000		$ 125,000	$ 125,000
Debt Instrument, Interest Rate, Stated Percentage																																								5.00%								5.00%		5.00%	5.00%
Original Issue Discount, Percentage																																								25.00%								25.00%		25.00%	25.00%
Gain (Loss) on Extinguishment of Debt, Total																																																			$ 64,000
Debt Instrument, Term																																								1 year
Convertible Notes Payable [Member] | Convertible Twelve Months OID Notes [Member]
Debt Instrument, Face Amount																																								$ 381,000								$ 381,000		$ 381,000	$ 381,000				$ 330,882
Original Issue Discount, Percentage																																								25.00%								25.00%		25.00%	25.00%
Debt Instrument, Convertible, Beneficial Conversion Feature																																																$ 381,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares																																																								2,095,588
Debt Instrument, Term																																																1 year
Debt Instrument, Unamortized Discount, Total																																								$ 76,000								$ 76,000		$ 76,000	$ 76,000
Convertible Notes Payable [Member] | Vista Capital 2019 Note [Member] | Vista Capital [Member]
Debt Instrument, Face Amount																				$ 330,000
Debt Instrument, Interest Rate, Stated Percentage																				12.00%
Proceeds from Convertible Debt																				$ 300,000
Debt Instrument, Convertible, Conversion Price, Percentage of Lowest Closing Bid Price																				65.00%
Debt Instrument, Convertible, Number of Consecutive Trade Days Prior to Conversion Date																				25 days
Debt Instrument, Convertible, Beneficial Conversion Feature																				$ 300,000
Convertible Notes Payable, Total		$ 270,000																																													$ 270,000					$ 270,000
Debt Instrument, Term																				270 days
Common Stock, Limit on Ownership Interest, Percent																				4.99%
Debt Instrument, Convertible, Days to Prepay Following Effective Date																				90 days
Debt Instrument, Convertible, Number of Business Days Notice of Prepayment																				10 days
Debt Instrument, Redemption Price, Percentage																				120.00%
Convertible Notes Payable [Member] | Vista Capital 2019 Note [Member] | Vista Capital [Member] | Subsequent Event [Member]
Convertible Notes Payable, Total																																														$ 70,000
Convertible Notes Payable [Member] | Vista Note [Member]
Debt Instrument, Increase (Decrease), Percentage																								20.00%
Convertible Notes Payable [Member] | Vista Capital 2017 Note [Member] | Vista Capital [Member]
Debt Instrument, Convertible, Beneficial Conversion Feature																				$ 487,000
Debt Instrument, Face Value, After Increase from Maturity Date Extension																$ 420,000				$ 605,100
Convertible Notes Payable [Member] | Convertible Note to Crossover Capital Fund I, LP [Member]
Debt Instrument, Face Amount														$ 110,000
Original Issue Discount, Percentage														10.00%
Debt Instrument, Term														270 days
Proceeds from Short-term Debt, Total														$ 95,000
Payments of Debt Issuance Costs														$ 5,000
Early Conversion of Unit Notes [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares																																										17,255,811
Debt Conversion, Original Debt, Amount																																										$ 4,626,000
Maximum Conversion Price Available for Conversion Option of a Convertible Debt Instrument For Holders With Debt Instruments With a Conversion Price Over $0.30 | $ / shares																																										$ 0.30
Debt Conversion, Conversion Incentive, Conversion Price Reduced, Additional Shares Issued | shares																																										966,318
Early Conversion of Unit Notes with 0.25 Conversion Prices [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																																										$ 0.25
Debt Conversion, Converted Instrument, Incentive Shares Issuable for Payment of Interest, Calculated Price | $ / shares																																										$ 0.25
Debt Conversion, Conversion Incentive, Input, Interest																																										$ 1,000
Debt Conversion, Converted Instrument, Incentive Shares Issuable for Payment of Interest | $ / shares																																										$ 1.50
Debt Conversion, Conversion Incentive, Output, Number of Incentive Shares | shares																																										6,000
Early Conversion of Unit Notes with 0.30 Conversion Prices [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																																										$ 0.30
Convertible Notes With Original Conversion Prices of $0.35 [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																																										$ 0.35
Debt Instrument, Convertible, Conversion Option, Percentage of Additional Funding Required, Holders With a Conversion Price Over $0.30																																										6.00%
Convertible Notes with Original Conversion Prices of $0.55 and $0.57 [Member]
Debt Instrument, Convertible, Conversion Option, Percentage of Additional Funding Required, Holders With a Conversion Price Over $0.30																																										20.00%
Convertible Notes With Original Conversion Prices of $0.55 [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																																										$ 0.55
Convertible Notes With Original Conversion Prices of $0.57 [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares																																										$ 0.57
Unit Notes Reduced Conversion Price to 0.30 [Member]
Proceeds from Conversion Inducement																																										$ 357,000
Debt Conversion, Conversion Incentive, Conversion Price Reduce, Additional Share Issue Upon Conversion | shares																																										2,749,197
Induced Conversion of Convertible Debt Expense																																										$ 632,000
Interest Expense, Total																																										$ 276,000
Conversion of Unit Notes [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares																														2,488,819
Debt Conversion, Original Debt, Amount																														$ 822,000
Conversion of Unit Notes, Principal, With Conversion Price 0.25, 0.35 and 0.55 [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares																														2,411,004
Conversion of Unit Notes, Unpaid Interest [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares																														77,815
Debt Conversion, Original Debt, Accrued Interest Amount																														$ 20,000
Convertible Notes Maturing on July 18, 2018 [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares																												1,153,600
Debt Conversion, Original Debt, Amount																												$ 280,000
Debt Conversion, Original Debt, Accrued Interest Amount																												9,000
Debt Instrument, Face Amount																												$ 280,000
Shares Issued, Price Per Share | $ / shares																												$ 0.25
First Fire [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares																																									383,047
Debt Conversion, Original Debt, Amount																																									$ 96,000
Stock Issued During Period, Share, Paid for Interest | shares																																									11,902
First Fire [Member] | Convertible Debt [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares																											217,960
Debt Instrument, Convertible, Conversion Price | $ / shares																											$ 0.25								$ 0.394																		$ 0.25								$ 0.394
Debt Instrument, Face Amount																																			$ 150,000
Debt Instrument, Interest Rate, Stated Percentage																																			5.00%
Short-term Debt, Total																											$ 54,000
FirstFire Purchase Agreement [Member]
Stock Issued During Period, Shares, Commitment Shares | shares																																			75,000
Share Price | $ / shares																																			$ 0.39
Stock Issued During Period, Value, Commitment Fee																																			$ 29,000
Winter 2016 Unit Offering [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares		131,579
Conversion of Secured Line of Credit to Twelve Month OID Notes [Member] | Three Holders [Member]
Debt Conversion, Original Debt, Amount																																												$ 205,000
Debt Instrument, Face Amount																																												$ 256,000
Original Issue Discount, Percentage																																												25.00%
Gain (Loss) on Extinguishment of Debt, Total																																												$ (315,000)
Conversion Debt to Equity [Member] | Tangiers Global [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares						1,200,000			2,640,000
Debt Conversion, Original Debt, Amount						$ 184,000			$ 369,000
Conversion of OID Notes to Common Stock [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares											$ 0.17																													$ 0.17					$ 0.25			$ 0.17		$ 0.17	$ 0.17
Equity Offering Price, Conversion Price Adjustment Threshold | $ / shares																																													$ 0.25
Stock Purchase Warrant, Percentage of Principal																																													75.00%
Conversion of Convertible Notes Payable into Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares					401,446	1,340,698
Debt Conversion, Original Debt, Amount					$ 63,000
Conversion of Convertible Note Into Twelve Month OID Note [Member]
Debt Conversion, Original Debt, Amount																																																$ 305,000
Conversion of Convertible Notes Payable Due February 28, 2020 Into Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares			690,530
Debt Conversion, Original Debt, Amount			$ 50,000	$ 50,000																																			$ 100,000
Convertible Note, Maturing April 7, 2020 [Member] | Subsequent Event [Member]
Debt Conversion, Original Debt, Amount																																														$ 200,000
Conversion of Principal Amount into Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares																																																				5,333,737
Debt Conversion, Original Debt, Amount																																																				$ 605,000
Conversion of Principal Amount into Common Stock [Member] | Vista Capital 2017 Note [Member]
Debt Conversion, Converted Instrument, Shares Issued for Principal | shares																																																				5,211,331
Debt Conversion, Converted Instrument, Shares Issued for Accrued Interest | shares																																																				122,406
Conversion of Convertible Note Payable into Shares of Clyra [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares										2,000
Debt Conversion, Original Debt, Amount										$ 440,000

[1] These notes are convertible at our option at maturity.