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Income Taxes (Tables) | 12 Months Ended
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Apr. 30, 2017
Income Tax Disclosure [Abstract] |
Income Tax Expense | Income tax expense consisted of the following:
$ in thousands |  | 2017 |  |  | 2016 |  |  | 2015 |
Current tax expense: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | 891 |  |  | $ | 974 |  |  | $ | 759 |
State and local |  |  | 120 |  |  |  | 117 |  |  |  | 151 |
Foreign |  |  | 1,467 |  |  |  | 1,122 |  |  |  | 1,348 |
Total current tax expense |  |  | 2,478 |  |  |  | 2,213 |  |  |  | 2,258 |
Deferred tax expense (benefit): |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | (108) |  |  |  | (431) |  |  |  | (187) |
State and local |  |  | 24 |  |  |  | 98 |  |  |  | (70) |
Foreign |  |  | (268) |  |  |  | (18) |  |  |  | (256) |
Total deferred tax benefit |  |  | (352) |  |  |  | (351) |  |  |  | (513) |
Net income tax expense |  | $ | 2,126 |  |  | $ | 1,862 |  |  | $ | 1,745 |
Schedule of Income Tax Reconciliation | The reasons for the differences between the above net income tax expense and the amounts computed by applying the statutory federal income tax rate to earnings before income taxes are as follows:
$ in thousands |  | 2017 |  |  | 2016 |  |  | 2015 |
Income tax expense at statutory rate |  | $ | 2,294 |  |  | $ | 1,952 |  |  | $ | 1,831 |
State and local taxes, net of federal income tax benefit (expense) |  |  | 100 |  |  |  | 102 |  |  |  | 97 |
Tax credits (state, net of federal benefit) |  |  | (110) |  |  |  | (407) |  |  |  | (157) |
Effects of differing US and foreign tax rates |  |  | (7) |  |  |  | 173 |  |  |  | 47 |
Increase (decrease) in valuation allowance |  |  | 82 |  |  |  | (10) |  |  |  | (40) |
Other items, net |  |  | (233) |  |  |  | 52 |  |  |  | (33) |
Net income tax expense |  | $ | 2,126 |  |  | $ | 1,862 |  |  | $ | 1,745 |
Summary of Deferred Tax Assets and Liabilities | Significant items comprising deferred tax assets and liabilities as of April 30 were as follows:
$ in thousands |  | 2017 |  |  | 2016 |
Deferred tax assets: |  |  |  |  |  |  |  |
Accrued employee benefit expenses |  | $ | 549 |  |  | $ | 529 |
Allowance for doubtful accounts |  |  | 67 |  |  |  | 74 |
Deferred compensation |  |  | 1,792 |  |  |  | 1,753 |
Tax credits |  |  | 208 |  |  |  | 224 |
Unrecognized actuarial loss, defined benefit plans |  |  | 3,223 |  |  |  | 3,850 |
Inventory Reserves |  |  | 360 |  |  |  | 118 |
Net operating loss carryforwards |  |  | 224 |  |  |  | — |
Other |  |  | 113 |  |  |  | 353 |
Total deferred tax assets |  |  | 6,536 |  |  |  | 6,901 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Book basis in excess of tax basis of property, plant and equipment |  |  | (1,600) |  |  |  | (1,655) |
Prepaid pension |  |  | (1,696) |  |  |  | (1,854) |
Total deferred tax liabilities |  |  | (3,296) |  |  |  | (3,509) |
Less: valuation allowance |  |  | (82) |  |  |  | — |
Net deferred tax assets |  | $ | 3,158 |  |  | $ | 3,392 |
Deferred tax assets classified in the balance sheet: |  |  |  |  |  |  |  |
Non-current |  |  | 3,158 |  |  |  | 3,392 |
Net deferred tax assets (liabilities) |  | $ | 3,158 |  |  | $ | 3,392 |

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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=65882285&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=65882285&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=65882285&loc=d3e32687-109319 + Details
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