| Consolidated Statements of Changes in Stockholders' Deficit - USD ($)
 | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Total | 
| Balance, shares at Jun. 30, 2016 | 20,938,000 |  |  |  | 
| Balance at Jun. 30, 2016 | $ 21,000 | $ 13,383,000 | $ (15,262,000) | $ (1,858,000) | 
| Issuance of common stock - conversion of related party debt to equity, shares | 1,000,000 |  |  |  | 
| Issuance of common stock - conversion of related party debt to equity | $ 1,000 | 399,000 |  | 400,000 | 
| Issuance of common stock - services, shares | 46,000 |  |  |  | 
| Issuance of common stock - services | $ 0 | 19,000 |  | 19,000 | 
| Issuance of common stock - private placement transactions, net, shares | 2,938,000 |  |  |  | 
| Issuance of common stock - private placement transactions, net | $ 3,000 | 1,072,000 |  | 1,075,000 | 
| Deferred financing costs related to debt modification |  | 10,000 |  | 10,000 | 
| Stock based compensation |  | 40,000 |  | 40,000 | 
| Net loss |  |  | (4,435,000) | (4,435,000) | 
| Balance, shares at Jun. 30, 2017 | 25,086,000 |  |  |  | 
| Balance at Jun. 30, 2017 | $ 25,000 | 14,923,000 | (19,697,000) | (4,749,000) | 
| Warrants exchanged for common stock, shares | 23,000 |  |  |  | 
| Warrants exchanged for common stock |  | 12,000 |  | 12,000 | 
| Stock based compensation |  | 11,000 |  | 11,000 | 
| Net loss |  |  | (1,446,000) | (1,446,000) | 
| Balance, shares at Sep. 30, 2017 | 25,109,000 |  |  |  | 
| Balance at Sep. 30, 2017 | $ 25,000 | 14,946,000 | (21,143,000) | (6,172,000) | 
| Balance, shares at Jun. 30, 2017 | 25,086,000 |  |  |  | 
| Balance at Jun. 30, 2017 | $ 25,000 | 14,923,000 | (19,697,000) | (4,749,000) | 
| Net loss |  |  |  | (5,039,000) | 
| Balance, shares at Mar. 31, 2018 | 25,442,000 |  |  |  | 
| Balance at Mar. 31, 2018 | $ 25,000 | 15,367,000 | (24,735,000) | (9,343,000) | 
| Balance, shares at Jun. 30, 2017 | 25,086,000 |  |  |  | 
| Balance at Jun. 30, 2017 | $ 25,000 | 14,923,000 | (19,697,000) | (4,749,000) | 
| Issuance of common stock - services, shares | 174,000 |  |  |  | 
| Issuance of common stock - services |  | 49,000 |  | 49,000 | 
| Issuance of common stock - private placement transactions, net, shares | 5,714,000 |  |  |  | 
| Issuance of common stock - private placement transactions, net | $ 6,000 | 3,969,000 |  | 3,975,000 | 
| Warrants exchanged for common stock, shares | 88,000 |  |  |  | 
| Stock based compensation |  | 255,000 |  | 255,000 | 
| Net loss |  |  | (6,965,000) | (6,965,000) | 
| Balance, shares at Jun. 30, 2018 | 31,060,000 |  |  |  | 
| Balance at Jun. 30, 2018 | $ 31,000 | 19,196,000 | (26,662,000) | (7,435,000) | 
| Balance, shares at Sep. 30, 2017 | 25,109,000 |  |  |  | 
| Balance at Sep. 30, 2017 | $ 25,000 | 14,946,000 | (21,143,000) | (6,172,000) | 
| Stock based compensation |  | 153,000 |  | 154,000 | 
| Net loss |  |  | (1,839,000) | (1,839,000) | 
| Balance, shares at Dec. 31, 2017 | 25,109,000 |  |  |  | 
| Balance at Dec. 31, 2017 | $ 25,000 | 15,100,000 | (22,982,000) | (7,857,000) | 
| Issuance of common stock - services, shares | 47,000 |  |  |  | 
| Issuance of common stock - services |  | 23,000 |  | 23,000 | 
| Issuance of common stock - private placement transactions, net, shares | 286,000 |  |  |  | 
| Issuance of common stock - private placement transactions, net |  | 200,000 |  | 200,000 | 
| Stock based compensation |  | 44,000 |  | 44,000 | 
| Net loss |  |  | (1,753,000) | (1,753,000) | 
| Balance, shares at Mar. 31, 2018 | 25,442,000 |  |  |  | 
| Balance at Mar. 31, 2018 | $ 25,000 | 15,367,000 | (24,735,000) | (9,343,000) | 
| Balance, shares at Jun. 30, 2018 | 31,060,000 |  |  |  | 
| Balance at Jun. 30, 2018 | $ 31,000 | 19,196,000 | (26,662,000) | (7,435,000) | 
| Issuance of common stock - services, shares | 39,000 |  |  |  | 
| Issuance of common stock - services |  | 152,000 |  | 152,000 | 
| Warrants exchanged for common stock, shares | 12,000 |  |  |  | 
| Stock based compensation |  | 164,000 |  | 164,000 | 
| Net loss |  |  | (2,401,000) | (2,401,000) | 
| Balance, shares at Sep. 30, 2018 | 31,111,000 |  |  |  | 
| Balance at Sep. 30, 2018 | $ 31,000 | 19,512,000 | (29,063,000) | (9,520,000) | 
| Balance, shares at Jun. 30, 2018 | 31,060,000 |  |  |  | 
| Balance at Jun. 30, 2018 | $ 31,000 | 19,196,000 | (26,662,000) | (7,435,000) | 
| Net loss |  |  |  | (9,139,000) | 
| Balance, shares at Mar. 31, 2019 | 51,000,000 |  |  |  | 
| Balance at Mar. 31, 2019 | $ 51,000 | 35,405,000 | (35,801,000) | (345,000) | 
| Balance, shares at Sep. 30, 2018 | 31,111,000 |  |  |  | 
| Balance at Sep. 30, 2018 | $ 31,000 | 19,512,000 | (29,063,000) | (9,520,000) | 
| Issuance of common stock - conversion of related party debt to equity, shares | 15,797,000 |  |  |  | 
| Issuance of common stock - conversion of related party debt to equity | $ 16,000 | 10,069,000 |  | 10,085,000 | 
| Issuance of common stock - services, shares | 38,000 |  |  |  | 
| Issuance of common stock - services |  | 56,000 |  | 56,000 | 
| Issuance of common stock - private placement transactions, net, shares | 3,359,000 |  |  |  | 
| Issuance of common stock - private placement transactions, net | $ 3,000 | 3,692,000 |  | 3,695,000 | 
| Warrants exchanged for common stock, shares | 24,000 |  |  |  | 
| Stock based compensation |  | 243,000 |  | 243,000 | 
| Net loss |  |  | (2,924,000) | (2,924,000) | 
| Balance, shares at Dec. 31, 2018 | 50,329,000 |  |  |  | 
| Balance at Dec. 31, 2018 | $ 50,000 | 33,572,000 | (31,987,000) | 1,635,000 | 
| Issuance of common stock - services, shares | 38,000 |  |  |  | 
| Issuance of common stock - services |  | 51,000 |  | 51,000 | 
| Issuance of common stock - private placement transactions, net, shares | 633,000 |  |  |  | 
| Issuance of common stock - private placement transactions, net | $ 1,000 | 696,000 |  | 697,000 | 
| Warrants exchanged for common stock |  | 1,086,000 |  | 1,086,000 | 
| Net loss |  |  | (3,814,000) | (3,814,000) | 
| Balance, shares at Mar. 31, 2019 | 51,000,000 |  |  |  | 
| Balance at Mar. 31, 2019 | $ 51,000 | $ 35,405,000 | $ (35,801,000) | $ (345,000) |