Coronavirus, Aid, Relief, And Economic Securities (CARES) Act, Funds Received

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Terminating term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Represents the minimum contractual term of certain current investments which the company has the ability and intent, if necessary, to liquidate in order to support its current operations.

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Represents the number of software development stages.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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Nominal or face amount used to calculate payment on derivative.

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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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Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) stagesInSoftwareDevelopment	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) stagesInSoftwareDevelopment	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Coronavirus, aid, relief, and economic securities act, funds received			$ 23,700,000
Minimum contractual term of certain current investments which can be liquidated			1 year
Software development stages \| stagesInSoftwareDevelopment	3		3
Derivative, gain (loss) on derivative, net	$ 0	$ 0	$ 0	$ 0
Termination term			1 year
Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Remaining lease terms	1 year		1 year
Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Remaining lease terms	15 years		15 years
Renewal term of lease	10 years		10 years
Foreign Exchange Forward
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative, notional amount	$ 18,200,000		$ 18,200,000		$ 17,900,000
Derivative, fair value	$ 0		$ 0		$ 0