Consolidated Statements of Cash Flows - USD ($) |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2023 |
Sep. 30, 2022 |
Sep. 30, 2021 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Mar. 31, 2024 |
Mar. 31, 2023 |
Mar. 31, 2022 |
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2022 |
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| Cash flows from operating activities: | |||||||||||||||||||||||||||||||||||||
| Net loss | $ (2,188,000) | [1],[2] | $ (2,260,000) | [1],[3] | $ (4,363,000) | [1],[3] | $ (3,084,000) | [1],[2],[3],[4] | $ (4,056,000) | [1],[3] | $ (9,742,000) | [1],[3] | $ (6,089,000) | [1],[2],[3],[4] | $ (5,543,000) | [1],[3] | $ (13,635,000) | [1],[3] | $ (8,333,000) | $ (7,743,000) | [5],[6],[7] | $ (16,473,000) | [5],[6] | ||||||||||||||
| Adjustments to reconcile net loss to net cash used in operating activities: | |||||||||||||||||||||||||||||||||||||
| Depreciation | 261,000 | 172,000 | 123,000 | 523,000 | 371,000 | 259,000 | 787,000 | 647,000 | 412,000 | 1,045,000 | 899,000 | 575,000 | |||||||||||||||||||||||||
| Stock-based compensation | 276,000 | 95,000 | 200,000 | 670,000 | 304,000 | 449,000 | 1,233,000 | 539,000 | 601,000 | 1,571,000 | 798,000 | 711,000 | |||||||||||||||||||||||||
| Amortization of debt issuance costs | 81,000 | 229,000 | 134,000 | 368,000 | 161,000 | 445,000 | 230,000 | 482,000 | |||||||||||||||||||||||||||||
| Non-cash lease expense | 146,000 | 117,000 | 106,000 | 296,000 | 236,000 | 214,000 | 448,000 | 370,000 | 324,000 | 606,000 | 512,000 | 438,000 | |||||||||||||||||||||||||
| Inventory write downs | 113,000 | [1] | 43,000 | [1] | 110,000 | [1] | 233,000 | [1] | 88,000 | [1] | 351,000 | [1] | 358,000 | [1] | 191,000 | [1] | 482,000 | [1] | 490,000 | 690,000 | [5] | 665,000 | [5] | ||||||||||||||
| Changes in operating assets and liabilities: | |||||||||||||||||||||||||||||||||||||
| Accounts receivable | (2,040,000) | [2] | (2,987,000) | 1,586,000 | (3,926,000) | [2] | (1,898,000) | [2] | 913,000 | (1,668,000) | [2] | (1,272,000) | [2] | (3,411,000) | (973,000) | (191,000) | [7] | (2,512,000) | |||||||||||||||||||
| Inventories | (546,000) | [1] | (2,538,000) | [1],[3] | (3,210,000) | [1],[3] | 371,000 | [1],[3] | (3,097,000) | [1],[3] | (8,886,000) | [1],[3] | (1,562,000) | [1],[3] | (4,610,000) | [1],[3] | (10,224,000) | [1],[3] | (1,309,000) | (2,408,000) | [5],[6] | (5,550,000) | [5],[6] | ||||||||||||||
| Other assets | (215,000) | (229,000) | (567,000) | (65,000) | (17,000) | (408,000) | 11,000 | 11,000 | (118,000) | (163,000) | (170,000) | (549,000) | |||||||||||||||||||||||||
| Accounts payable | 330,000 | 6,860,000 | 2,123,000 | 489,000 | [2],[3],[4] | 6,192,000 | [2] | 2,064,000 | 1,522,000 | [2],[3],[4] | 4,210,000 | [2] | 6,186,000 | 1,523,000 | 3,227,000 | [6],[7] | (530,000) | ||||||||||||||||||||
| Accrued expenses | 601,000 | 9,000 | (675,000) | 169,000 | [4] | 89,000 | (350,000) | 719,000 | [4] | 395,000 | (441,000) | 745,000 | 972,000 | (374,000) | |||||||||||||||||||||||
| Accrued interest | 100,000 | 1,000 | 1,000 | 128,000 | 1,000 | 134,000 | 2,000 | 124,000 | (32,000) | 139,000 | |||||||||||||||||||||||||||
| Office leases payable | (152,000) | (120,000) | (104,000) | (312,000) | (244,000) | (211,000) | (476,000) | (379,000) | (322,000) | (644,000) | 1,000 | (1,000) | |||||||||||||||||||||||||
| Deferred revenue | 205,000 | 184,000 | 103,000 | 179,000 | (82,000) | 116,000 | 212,000 | (163,000) | 289,000 | 354,000 | (518,000) | (436,000) | |||||||||||||||||||||||||
| Customer deposits | (65,000) | (165,000) | 151,000 | 150,000 | (146,000) | (171,000) | (64,000) | (40,000) | 519,000 | (64,000) | (93,000) | 4,000 | |||||||||||||||||||||||||
| Net cash used in operating activities | (3,093,000) | (589,000) | (4,416,000) | (4,045,000) | (1,892,000) | (15,401,000) | (4,274,000) | (5,197,000) | (19,338,000) | (4,798,000) | (3,574,000) | (23,893,000) | |||||||||||||||||||||||||
| Cash flows from investing activities: | |||||||||||||||||||||||||||||||||||||
| Purchases of equipment | (181,000) | (352,000) | (238,000) | (338,000) | (344,000) | (530,000) | (588,000) | (753,000) | (644,000) | (853,000) | (1,032,000) | (797,000) | |||||||||||||||||||||||||
| Proceeds from sale of fixed assets | 8,000 | 8,000 | 8,000 | ||||||||||||||||||||||||||||||||||
| Net cash used in investing activities | (181,000) | (352,000) | (238,000) | (338,000) | (336,000) | (530,000) | (588,000) | (745,000) | (644,000) | (853,000) | (1,024,000) | (797,000) | |||||||||||||||||||||||||
| Cash flows from financing activities: | |||||||||||||||||||||||||||||||||||||
| Proceeds from the issuance of common stock in registered direct offering, net of offering costs | 14,076,000 | 13,971,000 | 13,971,000 | 13,971,000 | |||||||||||||||||||||||||||||||||
| Proceeds from the issuance of common stock in public offering, net of offering costs | 1,602,000 | 1,602,000 | 697,000 | 1,602,000 | 1,556,000 | 1,602,000 | |||||||||||||||||||||||||||||||
| Proceeds from stock option exercises and employee stock purchase plan exercises | 110,000 | 141,000 | |||||||||||||||||||||||||||||||||||
| Proceeds from revolving line of credit | 18,055,000 | 12,900,000 | 35,868,000 | 30,550,000 | 3,500,000 | 52,820,000 | 48,800,000 | 3,500,000 | 67,209,000 | 63,400,000 | 8,450,000 | ||||||||||||||||||||||||||
| Payment of revolving line of credit | (15,981,000) | (12,138,000) | (32,205,000) | (28,628,000) | (49,087,000) | (43,198,000) | (63,287,000) | (58,377,000) | (3,561,000) | ||||||||||||||||||||||||||||
| Payment of finance leases | (40,000) | (75,000) | (22,000) | (110,000) | (52,000) | (148,000) | (87,000) | ||||||||||||||||||||||||||||||
| Net cash provided by financing activities | 2,034,000 | 762,000 | 15,678,000 | 3,588,000 | 1,900,000 | 19,073,000 | 3,733,000 | 6,247,000 | 19,073,000 | 3,915,000 | 6,492,000 | 20,462,000 | |||||||||||||||||||||||||
| Net change in cash | (1,240,000) | (179,000) | 11,024,000 | (795,000) | (328,000) | 3,142,000 | (1,129,000) | 305,000 | (909,000) | (1,736,000) | 1,894,000 | (4,228,000) | |||||||||||||||||||||||||
| Cash, beginning of period | 2,379,000 | 485,000 | 4,713,000 | 2,379,000 | 485,000 | 4,713,000 | 2,379,000 | 485,000 | 4,713,000 | 2,379,000 | 485,000 | 4,713,000 | |||||||||||||||||||||||||
| Cash, end of period | 1,139,000 | 306,000 | 15,737,000 | 1,584,000 | 157,000 | 7,855,000 | 1,250,000 | 790,000 | 3,804,000 | 643,000 | 2,379,000 | 485,000 | |||||||||||||||||||||||||
| Supplemental Disclosures of Non-Cash Investing and Financing Activities: | |||||||||||||||||||||||||||||||||||||
| Initial right of use asset recognition | 78,000 | 258,000 | 855,000 | 855,000 | |||||||||||||||||||||||||||||||||
| Common stock issued for vested RSUs | 5,000 | 183,000 | 114,000 | 222,000 | 114,000 | 9,700 | 538,000 | 417,000 | 21,000 | ||||||||||||||||||||||||||||
| Warrants issued in connection with borrowing agreements, recorded as debt issuance cost | 92,000 | 92,000 | 92,000 | 253,000 | |||||||||||||||||||||||||||||||||
| Supplemental cash flow information: | |||||||||||||||||||||||||||||||||||||
| Interest paid | $ 223,000 | $ 99,000 | $ 2,000 | $ 605,000 | $ 288,000 | $ 33,000 | $ 1,000,000 | $ 524,000 | $ 86,000 | $ 1,409,000 | $ 1,127,000 | $ 151,000 | |||||||||||||||||||||||||
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