Consolidated Statement of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Operating activities
Net income (loss)	$ 8,359	$ (2,230)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Allowance for credit losses	122	0
Inventory allowance	367	591
Amortization of deferred finance costs and other assets	75	150
Deferred tax benefit	(2,672)	0
Depreciation and amortization	1,692	1,635
Loss on investments	91	740
(Gain) on sale of equipment	(2)	0
Changes in operating assets and liabilities:
Trade accounts receivable	431	2,714
Inventories	5,949	(2,437)
Prepaid expenses and other current assets	(2,989)	(314)
Capitalized product development cost	(1,321)	0
Other assets	12	(279)
Operating lease ROU assets and lease liabilities	(68)	(54)
Accounts payable	(3,495)	(3,077)
Accrued compensation and related taxes	987	159
Accrued warranty expense	286	131
Deferred revenue	1,309	2,921
Accrued other expenses and other current liabilities	1,531	(338)
Net cash provided by operating activities	11,444	1,655
Investing activities
Purchases of property, plant and equipment	(1,235)	(2,117)
Net cash used in investing activities	(1,235)	(2,117)
Financing activities
Proceeds from issuance of common stock options	32	1,063
Proceeds from issuance of common stock warrants	0	1,000
Proceeds from credit facility and notes payable	46,359	74,908
Repayment of credit facility and notes payable	(52,981)	(74,971)
Net cash (used in) provided by financing activities	(6,590)	2,000
Net change in cash and cash equivalents	3,619	1,538
Cash and cash equivalents, beginning of year	3,456	1,918
Cash and cash equivalents, end of year	7,075	3,456
Supplemental disclosure
Interest paid	357	660
Non-cash financing activity
Common stock issued under restricted stock units	376	890
Cashless exercise of stock options and related conversion of net shares to stockholders’ equity	30	4
Share-Based Payment Arrangement, Option [Member]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Share-based compensation expense -stock options	286	200
Restricted Stock Units (RSUs) [Member]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Share-based compensation expense -stock options	$ 494	$ 1,143