Note 1 - Background and Significant Accounting Policies - Discontinued Operations (Details) - USD ($)		3 Months Ended		9 Months Ended
	Nov. 15, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
CASH AND CASH EQUIVALENTS AT END OF PERIOD FROM CONTINUING OPERATIONS		$ 37,300	$ 87,772	$ 37,300	$ 87,772	$ 182,055
Accounts receivable, net of allowance for doubtful accounts of $91,536 and $66,748 at December 31, 2019 and March 31, 2019, respectively		80,436		80,436		488,329
Inventory, net		1,560,048		1,560,048		1,533,792
Prepaid expenses and other current assets		83,240		83,240		262,208
Note receivable		1,365,042		1,365,042
TOTAL CURRENT ASSETS		3,126,066		3,126,066		3,466,771
Property and equipment, net		10,097,430		10,097,430		10,481,706
Intangible assets, net of accumulated amortization of $3,745 at December 31, 2019 and March 31, 2019		2,073,839		2,073,839		1,818,802
Note receivable		5,366,133		5,366,133
Deposits and other noncurrent assets		95,504		95,504		230,651
Operating lease right-of-use assets, net		144,146		144,146
TOTAL ASSETS		20,903,118		20,903,118		30,023,302
Accounts payable		1,998,994		1,998,994		1,374,771
Accrued interest		429,064		429,064		142,112
Accrued liabilities		469,053		469,053		244,931
Notes and convertible notes payable, net of unamortized discount of $1,008,086 and $799,410 at December 31, 2019 and March 31, 2019, respectively		4,860,221		4,860,221		2,229,812
Indebtedness to related parties		324,738		324,738
Income tax payable		506,145		506,145		506,145
Operating lease obligations, current		47,084		47,084
Finance lease obligations, current		134,239		134,239		80,132
TOTAL CURRENT LIABILITIES		8,921,461		8,921,461		6,712,180
Note payable, net of unamortized discount of $0 and $13,929 at December 31, 2019 and March 31, 2019, respectively						161,072
Operating lease obligations, long term		114,052		114,052
Finance lease obligations, long term		3,565,622		3,565,622		3,646,540
TOTAL LIABILITIES		12,601,135		12,601,135		12,867,303
Sales revenue		254,131	695,764	2,336,505	2,728,277
Cost of goods sold		(675,933)	(302,569)	(3,157,452)	(1,185,878)
Gross profit (loss)		(421,802)	393,195	(820,947)	1,542,399
General and administrative expenses		1,744,699	2,456,411	5,213,561	10,079,767
LOSS FROM OPERATIONS		(2,166,501)	(2,063,216)	(6,034,508)	(8,537,368)
Interest expense, net		(419,264)	(258,522)	(1,332,637)	(4,681,235)
Loss on extinguishment		(92,795)		(216,954)
Gain on deconsolidation of subsidiary	$ 4,502,058	4,502,058		4,502,058
Total other expense		3,871,304	(661,026)	3,027,387	(8,033,546)
NET LOSS BEFORE INCOME TAXES		1,704,803	(2,724,242)	(3,007,121)	(16,570,914)
Income tax expense			(737,568)		(737,568)
Net loss		984,147	(4,050,647)	(4,483,341)	(19,433,195)
Continuing Operations [Member]
CASH AND CASH EQUIVALENTS AT END OF PERIOD FROM CONTINUING OPERATIONS		37,300		37,300		182,055
Accounts receivable, net of allowance for doubtful accounts of $91,536 and $66,748 at December 31, 2019 and March 31, 2019, respectively		80,436		80,436		488,329
Inventory, net		1,560,048		1,560,048		1,533,792
Prepaid expenses and other current assets		83,240		83,240		262,208
Note receivable		1,365,042		1,365,042
TOTAL CURRENT ASSETS		3,126,066		3,126,066		2,466,384
Property and equipment, net		10,097,430		10,097,430		10,481,706
Intangible assets, net of accumulated amortization of $3,745 at December 31, 2019 and March 31, 2019		2,073,839		2,073,839		1,818,802
Note receivable		5,366,133		5,366,133
Deposits and other noncurrent assets		95,504		95,504		230,651
Operating lease right-of-use assets, net		144,146		144,146
TOTAL ASSETS		20,903,118		20,903,118		14,997,543
Accounts payable		1,998,994		1,998,994		1,374,771
Accrued interest		429,064		429,064		142,112
Accrued liabilities		469,053		469,053		244,931
Notes and convertible notes payable, net of unamortized discount of $1,008,086 and $799,410 at December 31, 2019 and March 31, 2019, respectively		4,860,221		4,860,221		2,229,812
Indebtedness to related parties		476,661		476,661
Income tax payable		506,145		506,145		506,145
Operating lease obligations, current		47,084		47,084
Finance lease obligations, current		134,239		134,239		80,132
TOTAL CURRENT LIABILITIES		8,921,461		8,921,461		4,577,903
Note payable, net of unamortized discount of $0 and $13,929 at December 31, 2019 and March 31, 2019, respectively						161,072
Operating lease obligations, long term		114,052		114,052
Finance lease obligations, long term		3,565,622		3,565,622		3,646,540
TOTAL LIABILITIES		12,601,135		12,601,135		8,385,515
Sales revenue		254,131	695,764	2,336,505	2,728,277
Cost of goods sold		(675,933)	(302,569)	(3,157,452)	(1,185,878)
Gross profit (loss)		(421,802)	393,195	(820,947)	1,542,399
General and administrative expenses		1,744,699	2,456,411	5,213,561	10,079,767
LOSS FROM OPERATIONS		(2,166,501)	(2,063,216)	(6,034,508)	(8,537,368)
Interest expense, net		(419,264)	(258,522)	(1,332,637)	(4,681,235)
Other income/(expense)		(118,695)	(402,504)	74,920	(3,352,311)
Loss on extinguishment		(92,795)		(216,954)
Gain on deconsolidation of subsidiary		4,502,058		4,502,058
Total other expense		3,871,304	(661,026)	3,027,387	(8,033,546)
NET LOSS BEFORE INCOME TAXES		1,704,803	(2,724,242)	(3,007,121)	(16,570,914)
Income tax expense			(737,568)		(737,568)
Net loss		1,704,803	(3,461,810)	(3,007,121)	(17,308,482)
Discontinued Operations [Member]
CASH AND CASH EQUIVALENTS AT END OF PERIOD FROM CONTINUING OPERATIONS						45,703
Accounts receivable, net of allowance for doubtful accounts of $91,536 and $66,748 at December 31, 2019 and March 31, 2019, respectively
Inventory, net						602,714
Prepaid expenses and other current assets						351,970
Note receivable
TOTAL CURRENT ASSETS						1,000,387
Property and equipment, net						13,022,996
Intangible assets, net of accumulated amortization of $3,745 at December 31, 2019 and March 31, 2019
Note receivable
Deposits and other noncurrent assets						1,002,376
Operating lease right-of-use assets, net
TOTAL ASSETS						15,025,759
Accounts payable						1,695,985
Accrued interest
Accrued liabilities						76,415
Notes and convertible notes payable, net of unamortized discount of $1,008,086 and $799,410 at December 31, 2019 and March 31, 2019, respectively						300,000
Indebtedness to related parties
Income tax payable
Operating lease obligations, current
Finance lease obligations, current						61,877
TOTAL CURRENT LIABILITIES						2,134,277
Note payable, net of unamortized discount of $0 and $13,929 at December 31, 2019 and March 31, 2019, respectively
Operating lease obligations, long term
Finance lease obligations, long term						2,347,511
TOTAL LIABILITIES						4,481,788
Sales revenue		192,070		569,077
Cost of goods sold		(193,915)		(574,544)
Gross profit (loss)		(1,845)		(5,467)
General and administrative expenses		666,042	526,210	1,292,613	1,935,766
LOSS FROM OPERATIONS		(667,887)	(526,210)	(1,298,080)	(1,935,766)
Interest expense, net		(52,769)	(62,627)	(178,140)	(188,947)
Other income/(expense)
Loss on extinguishment
Gain on deconsolidation of subsidiary
Total other expense		(52,769)	(62,627)	(178,140)	(188,947)
NET LOSS BEFORE INCOME TAXES		(720,656)	(588,837)	(1,476,220)	(2,124,713)
Income tax expense
Net loss		(720,656)	(588,837)	(1,476,220)	(2,124,713)
Segment, Continuing and Discontinued Operations [Member]
CASH AND CASH EQUIVALENTS AT END OF PERIOD FROM CONTINUING OPERATIONS		37,300		37,300		227,758
Accounts receivable, net of allowance for doubtful accounts of $91,536 and $66,748 at December 31, 2019 and March 31, 2019, respectively		80,436		80,436		488,329
Inventory, net		1,560,048		1,560,048		2,136,506
Prepaid expenses and other current assets		83,240		83,240		614,178
Note receivable		1,365,042		1,365,042
TOTAL CURRENT ASSETS		3,126,066		3,126,066		3,466,771
Property and equipment, net		10,097,430		10,097,430		23,504,702
Intangible assets, net of accumulated amortization of $3,745 at December 31, 2019 and March 31, 2019		2,073,839		2,073,839		1,818,802
Note receivable		5,366,133		5,366,133
Deposits and other noncurrent assets		95,504		95,504		1,233,027
Operating lease right-of-use assets, net		144,146		144,146
TOTAL ASSETS		20,903,118		20,903,118		30,023,302
Accounts payable		1,998,994		1,998,994		3,070,756
Accrued interest		429,064		429,064		142,112
Accrued liabilities		469,053		469,053		321,346
Notes and convertible notes payable, net of unamortized discount of $1,008,086 and $799,410 at December 31, 2019 and March 31, 2019, respectively		4,860,221		4,860,221		2,529,812
Indebtedness to related parties		476,661		476,661
Income tax payable		506,145		506,145		506,145
Operating lease obligations, current		47,084		47,084
Finance lease obligations, current		134,239		134,239		142,009
TOTAL CURRENT LIABILITIES		8,921,461		8,921,461		6,712,180
Note payable, net of unamortized discount of $0 and $13,929 at December 31, 2019 and March 31, 2019, respectively						161,072
Operating lease obligations, long term		114,052		114,052
Finance lease obligations, long term		3,565,622		3,565,622		5,994,051
TOTAL LIABILITIES		12,601,135		12,601,135		$ 12,867,303
Sales revenue		446,201	695,764	2,905,582	2,728,277
Cost of goods sold		(869,848)	(302,569)	(3,731,996)	(1,185,878)
Gross profit (loss)		(423,647)	393,195	(826,414)	1,542,399
General and administrative expenses		2,410,741	2,982,621	6,506,174	12,015,533
LOSS FROM OPERATIONS		(2,834,388)	(2,589,426)	(7,332,588)	(10,473,134)
Interest expense, net		(472,033)	(321,149)	(1,510,777)	(4,870,182)
Other income/(expense)		(118,695)	(402,504)	74,920	(3,352,311)
Loss on extinguishment		(92,795)		(216,954)
Gain on deconsolidation of subsidiary		4,502,058		4,502,058
Total other expense		3,818,535	(723,653)	2,849,247	(8,222,493)
NET LOSS BEFORE INCOME TAXES		984,147	(3,313,079)	(4,483,341)	(18,695,627)
Income tax expense			(737,568)		(737,568)
Net loss		$ 984,147	$ (4,050,647)	$ (4,483,341)	$ (19,433,195)