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Deferred Compensation Arrangement With Individual, Liability-Classified Portion, Shares Issued

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Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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The expenses and losses recorded for each transaction with the acquiree that was recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

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Number of shares issued pursuant to the terms of a deferred compensation arrangement.

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.

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Amount of cash paid to settle liability for award under share-based payment arrangement.

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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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STOCK-BASED COMPENSATION: Other (Details) $ in Thousands	9 Months Ended
STOCK-BASED COMPENSATION: Other (Details) $ in Thousands	Dec. 31, 2019 USD ($) numberOfExerciseMultiple shares	Dec. 31, 2018 USD ($)	Mar. 31, 2019 USD ($)
Share-based compensation
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 49,000	$ 113,700
Payments related to tax withholding for share-based compensation	18,057	36,906
Share-based Activity - Other disclosures
Non-cash stock compensation expense	72,279	61,547
Other accrued expenses	74,079		$ 40,916
Holdback expenses	$ 38,300
Consideration Holdback
Share-based Activity - Other disclosures
Contingent consideration arrangements, number of annual increments \| numberOfExerciseMultiple	3
Data Plus Math Corporation
Share-based Activity - Other disclosures
Holdback consideration transferred	$ 24,700
Holdback expenses	$ 4,100
Data Plus Math Corporation \| Consideration Holdback
Share-based Activity - Other disclosures
Contingent consideration arrangements, number of annual increments \| numberOfExerciseMultiple	3
Arbor
Share-based Activity - Other disclosures
Holdback consideration transferred	$ 38,300
Arbor \| Arbor Holdback Agreement
Share-based Activity - Other disclosures
Share-based compensation expense	2,600	$ 11,500
Pacific Data Partners LLC
Share-based compensation
Business Combination, Separately Recognized Transactions, Expenses and Losses Recognized	39,100
Share-based Activity - Other disclosures
Other accrued expenses	17,500
Pacific Data Partners LLC \| Common Stock
Share-based Activity - Other disclosures
Performance payout	$ 19,700
Deferred compensation arrangement, shares issued (in shares) \| shares	465,389
Deferred compensation arrangement, liability-classified portion, shares issued (in shares) \| shares	418,850