Cash, Cash Equivalents And Held-To-Maturity Debt Securities, Amortized Cost

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Concentration Risk, Number Of Financial Institutions Where Cash Held

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Equity awards liability.

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Amount of allowance for credit loss on accounts receivable.

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Amount of impairment loss from capitalized computer software costs.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Amount of cost for defined contribution plan.

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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No definition available.

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Percentage employer matches of the employee's percentage contribution matched.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)	3 Months Ended		12 Months Ended
SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)	Mar. 31, 2024 USD ($) segment financial_institution	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Product Information [Line Items]
Goodwill, impairment charges	$ 0	$ 0
Intangible assets, impairment charges	0	0
Capitalized software development costs, impairment charges	0	0
Advertising costs	78,000	$ 199,000
Equity awards liability	0		$ 4,000
Deferred revenue	1,469,000		2,209,000	$ 906,000
Revenue recognized			555,000
Noncurrent deferred revenue balance	0		0
Accounts receivable, net of allowance for doubtful accounts	2,744,000		4,703,000
Accounts receivable, allowance for doubtful accounts	$ 85,000		69,000
Number of financial institutions \| financial_institution	2
Number of reportable segments \| segment	1
Number of operating segments \| segment	1
Three Customers \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Product Information [Line Items]
Business concentration risk, percent	44.00%	39.00%
Three Customers \| Accounts Receivable \| Customer Concentration Risk
Product Information [Line Items]
Business concentration risk, percent		54.00%
Customer One \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Product Information [Line Items]
Business concentration risk, percent	19.00%	16.00%
Customer One \| Accounts Receivable \| Customer Concentration Risk
Product Information [Line Items]
Business concentration risk, percent	36.00%	28.00%
Customer Two \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Product Information [Line Items]
Business concentration risk, percent	13.00%	13.00%
Customer Two \| Accounts Receivable \| Customer Concentration Risk
Product Information [Line Items]
Business concentration risk, percent	1.00%	16.00%
Customer Three \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Product Information [Line Items]
Business concentration risk, percent	12.00%	10.00%
Customer Three \| Accounts Receivable \| Customer Concentration Risk
Product Information [Line Items]
Business concentration risk, percent	7.00%	10.00%
Four Customers \| Accounts Receivable \| Customer Concentration Risk
Product Information [Line Items]
Business concentration risk, percent	56.00%
Customer Four \| Accounts Receivable \| Customer Concentration Risk
Product Information [Line Items]
Business concentration risk, percent	12.00%
Fair Value, Inputs, Level 1
Product Information [Line Items]
Cash, cash equivalents and short-term investments	$ 9,239,000		8,980,000
Fair Value, Inputs, Level 2
Product Information [Line Items]
Equity awards liability	$ 0		$ 4,000
Retirement Savings 401k Plan
Product Information [Line Items]
Retirement plan, maximum employee contribution, percent	35.00%
Retirement plan, employer matching contribution, percent of match	50.00%
Retirement plan, employer matching contribution, percent of employees' gross pay	6.00%
Retirement plan, matching contributions	$ 0	$ 27,000
Minimum
Product Information [Line Items]
Property and equipment, useful life	3 years
Maximum
Product Information [Line Items]
Property and equipment, useful life	7 years