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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	3 Months Ended				6 Months Ended
STOCK-BASED COMPENSATION: Other (Details) $ in Thousands	Sep. 30, 2019 USD ($) numberOfExerciseMultiple	Jun. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) numberOfExerciseMultiple shares	Sep. 30, 2018 USD ($)	Mar. 31, 2019 USD ($)
Share-based compensation
Non-cash stock-based compensation	$ 16,268	$ 15,064	$ 17,281	$ 16,811	$ 31,300	$ 34,100
Payments related to tax withholding for share-based compensation					13,907	14,624
Share-based Activity - Other disclosures
Non-cash stock compensation expense					41,984	35,465
Other accrued expenses	55,724				55,724		$ 40,916
Holdback expenses					$ 38,300
Common Stock
Share-based compensation
Non-cash stock-based compensation	$ 1	$ 5	$ 9	$ 15
Consideration Holdback
Share-based Activity - Other disclosures
Contingent consideration arrangements, number of annual increments \| numberOfExerciseMultiple	3				3
Data Plus Math Corporation
Share-based Activity - Other disclosures
Holdback consideration transferred					$ 24,700
Holdback expenses					2,100
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	$ 7,700
Pacific Data Partners LLC
Share-based compensation
Business Combination, Separately Recognized Transactions, Expenses and Losses Recognized					27,200
Share-based Activity - Other disclosures
Other accrued expenses	$ 6,800				6,800
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