Income tax reconciliation acquisition expenses (benefit).

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- Definition

Income tax reconciliation impact of amended returns.

+ References

No definition available.

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Income tax reconciliation impact of audit settlements.

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- Definition

Income tax reconciliation impact of deferred adjustments.

+ References

No definition available.

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- Definition

Income tax reconciliation impact of foreign operations.

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No definition available.

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- Definition

Income tax reconciliation impact of uncertain tax positions.

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No definition available.

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- Definition

Income tax reconciliation nondeductible expense (benefit).

+ References

No definition available.

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- Definition

Income tax reconciliation return to provision true-ups.

+ References

No definition available.

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- Definition

Income tax reconciliation revaluation of deferred tax balances tax reform.

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Income Taxes - Summary of Provision for (benefit of) Income Taxes Differs from the Amount Computed at Federal Statutory Rate (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Tax expense at United States federal statutory rate									$ 6,150	$ (129)	$ 8,263
Research and development tax credits									(4,647)	(4,179)	(2,276)
Impact of foreign operations									(304)	(365)	(402)
Compensation									(169)	620	192
Return to provision true-ups									(149)	(2,229)	(300)
Impact of valuation allowance									(33)	(101)	(212)
Acquisition expenses									(2)	304	1,336
Qualified production activities income deduction										(4)	(763)
Impact of deferred adjustments									132	415	(490)
Non-deductible expenses									140	98	(7)
Foreign transition tax - Tax Reform									210	1,381
Revaluation of deferred tax balances - Tax Reform									231	2,328
Impact of uncertain tax positions									375	(2,884)	311
Impact of amended returns									391	196	(1,530)
Impact of audit settlements									967	428
State income taxes									1,502	1,291	1,246
Provision for (benefit of) income taxes	$ 2,000	$ 456	$ 1,896	$ 442	$ (8,964)	$ 1,487	$ 2,493	$ 2,154	$ 4,794	$ (2,830)	$ 5,368