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Income Taxes (Tables) | 12 Months Ended
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Mar. 31, 2018
Income Tax Disclosure [Abstract] |
Components of income taxes | Components of income tax expense (benefit) are as follows:
| Years Ended March 31,
| 2018 |  | 2017 |  | 2016
Current |  |  |  |  |
Federal | $ | 80,339 |  |  | $ | 2,184 |  |  | $ | 11,971 |
State | 3,437 |  |  | 1,576 |  |  | 2,443 |
Foreign | 14,388 |  |  | 8,039 |  |  | 12,039 |
Total | 98,164 |  |  | 11,799 |  |  | 26,453 |
Deferred |  |  |  |  |
Federal | 12,007 |  |  | (20,287 | ) |  | 7,887 |
State | 391 |  |  | (3,446 | ) |  | 1,113 |
Foreign | (4,260 | ) |  | (762 | ) |  | (833 | )
Total | 8,138 |  |  | (24,495 | ) |  | 8,167 |
Income tax expense (benefit) | $ | 106,302 |  |  | $ | (12,696 | ) |  | $ | 34,620 |
Actual income taxes differed from that obtained by applying the statutory federal income tax rate to income before income taxes | Income tax expense (benefit) differed from that obtained by applying the statutory federal income tax rate to income before income taxes or benefit as follows:
| Years Ended March 31,
| 2018 |  | 2017 |  | 2016
Computed expected income taxes | $ | 69,556 |  |  | $ | (2,445 | ) |  | $ | 54,910 |
State income taxes, net of federal income tax benefit | 9,044 |  |  | (1,403 | ) |  | 1,298 |
Foreign rate differential | (37,090 | ) |  | (8,062 | ) |  | (28,233 | )
Unrecognized tax benefits | 1,301 |  |  | 2,691 |  |  | 3,670 |
Income tax expense on diminution of operations and nondeductible goodwill | — |  |  | 3,921 |  |  | 1,352 |
Foreign income withholding tax expense | 262 |  |  | 432 |  |  | — |
Nontaxable income | (7,006 | ) |  | (5,055 | ) |  | — |
US tax on deemed repatriated foreign earnings | 57,138 |  |  | — |  |  | — |
Re-measurement of deferred taxes | 14,395 |  |  | — |  |  | — |
Statutory foreign income tax expense (benefit) | 59 |  |  | (2,504 | ) |  | (477 | )
Other | (1,357 | ) |  | (271 | ) |  | 2,100 |
Income tax expense (benefit) | $ | 106,302 |  |  | $ | (12,696 | ) |  | $ | 34,620 |
Tax effects of temporary differences that give rise to significant portions of deferred tax assets and deferred tax liabilities | The tax effects of temporary differences that give rise to significant portions of deferred tax assets and deferred tax liabilities are as follows:
| As of March 31,
| 2018 |  | 2017
Deferred tax assets (liabilities), noncurrent: |  |  |
Amortization and impairment of intangible assets | $ | 18,261 |  |  | $ | 28,304 |
Depreciation of property and equipment | (9,638 | ) |  | (19,511 | )
Stock-based compensation | 4,027 |  |  | 6,258 |
Deferred rent | 5,452 |  |  | 6,809 |
Acquisition costs | 481 |  |  | 751 |
Uniform capitalization adjustment to inventory | 3,212 |  |  | 4,971 |
Bad debt allowance and other reserves | 12,939 |  |  | 15,946 |
State taxes | 798 |  |  | (145 | )
Prepaid expenses | (2,686 | ) |  | (4,144 | )
Accrued bonuses | 7,573 |  |  | 1,456 |
Foreign currency exchange rate hedges | (80 | ) |  | (534 | )
Other | (2,821 | ) |  | 1,376 |
Net operating loss carry-forwards | 863 |  |  | 3,171 |
Deferred tax assets, net | $ | 38,381 |  |  | $ | 44,708 |
Reconciliation of the beginning and ending amounts of total unrecognized tax benefits | A reconciliation of the beginning and ending amounts of total gross unrecognized tax benefits is as follows:
Balance, March 31, 2016 | $ | 8,695 |
Gross increase related to current year tax positions | 1,878 |
Gross increase related to prior year tax positions | 1,154 |
Balance, March 31, 2017 | 11,727 |
Gross increase related to current year tax positions | 1,168 |
Gross increase related to prior year tax positions | 1,243 |
Settlements | (4,501 | )
Lapse of statute of limitations | (43 | )
Balance, March 31, 2018 | $ | 9,594 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319 + Details
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