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Income Taxes (Tables) | 12 Months Ended
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Aug. 31, 2013
Income Taxes [Abstract] |
Schedule Of Earnings Before Income Taxes |
|  | For the years ended August 31,
$ in thousands |  | 2013 |  | 2012 |  | 2011
United States |  | $ | 99,781 |  | $ | 57,884 |  | $ | 53,879
Foreign |  |  | 7,526 |  |  | 7,224 |  |  | 2,635
|  | $ | 107,307 |  | $ | 65,108 |  | $ | 56,514
Schedule Of Significant Components Of Income Tax Provision |
|  | For the years ended August 31,
$ in thousands |  | 2013 |  | 2012 |  | 2011
Current: |  |  |  |  |  |  |  |  |
Federal |  | $ | 33,498 |  | $ | 21,694 |  | $ | 18,705
State |  |  | 2,303 |  |  | 1,026 |  |  | 1,309
Foreign |  |  | 4,173 |  |  | 2,979 |  |  | 2,526
Total current |  |  | 39,974 |  |  | 25,699 |  |  | 22,540
Deferred: |  |  |  |  |  |  |  |  |
Federal |  |  | (1,554) |  |  | (3,829) |  |  | (1,484)
State |  |  | (178) |  |  | 614 |  |  | (29)
Foreign |  |  | (1,505) |  |  | (653) |  |  | (1,315)
Total deferred |  |  | (3,237) |  |  | (3,868) |  |  | (2,828)
Total income tax provision |  | $ | 36,737 |  | $ | 21,831 |  | $ | 19,712
Schedule of Effective Income Tax Rate Reconciliation |
|  | For the years ended August 31,
$ in thousands |  | 2013 |  | 2012 |  | 2011
|  | Amount |  | % |  | Amount |  | % |  | Amount |  | %
U.S. statutory rate |  | $ | 37,558 |  | 35.0 |  | $ | 22,788 |  | 35.0 |  | $ | 19,780 |  | 35.0
State and local taxes, net of federal tax benefit |  |  | 1,365 |  | 1.3 |  |  | 1,337 |  | 2.0 |  |  | 889 |  | 1.6
Foreign tax rate differences |  |  | (103) |  | (0.1) |  |  | (338) |  | (0.5) |  |  | (257) |  | (0.5)
Domestic production activities deduction |  |  | (2,638) |  | (2.5) |  |  | (1,900) |  | (2.9) |  |  | (1,301) |  | (2.3)
Research and development and fuel tax credits |  |  | (289) |  | (0.3) |  |  | (105) |  | (0.2) |  |  | (239) |  | (0.4)
Other |  |  | 844 |  | 0.8 |  |  | 49 |  | 0.1 |  |  | 840 |  | 1.5
Effective rate |  | $ | 36,737 |  | 34.2 |  | $ | 21,831 |  | 33.5 |  | $ | 19,712 |  | 34.9
Schedule of Deferred Tax Assets and Liabilities |
|  | August 31,
$ in thousands |  | 2013 |  | 2012
Deferred tax assets: |  |  |  |  |  |
Deferred rental revenue |  | $ | 835 |  | $ | 382
Employee benefits liability |  |  | 1,191 |  |  | 1,282
Net operating loss carry forwards |  |  | 21 |  |  | 284
Defined benefit pension plan |  |  | 1,396 |  |  | 1,554
Share-based compensation |  |  | 2,299 |  |  | 2,284
State tax credits |  |  | 98 |  |  | 48
Inventory |  |  | 909 |  |  | 633
Warranty |  |  | 2,449 |  |  | 1,686
Vacation |  |  | 182 |  |  | 224
Accrued expenses and allowances |  |  | 8,043 |  |  | 6,610
Total deferred tax assets |  | $ | 17,423 |  | $ | 14,987
Deferred tax liabilities: |  |  |  |  |  |
Intangible assets |  |  | (11,160) |  |  | (6,195)
Property, plant and equipment |  |  | (8,493) |  |  | (8,210)
Inventory |  |  | (89) |  |  | (115)
Other |  |  | (229) |  |  | (296)
Total deferred tax liabilities |  |  | (19,971) |  |  | (14,816)
Net deferred tax (liabilities) assets |  | $ | (2,548) |  | $ | 171
Schedule of Unrecognized Tax Benefits Roll Forward |
|  | August 31,
$ in thousands |  | 2013 |  | 2012
Unrecognized Tax Benefits at September 1 |  | $ | 1,309 |  | $ | 1,565
Increases for positions taken in current year |  |  | 68 |  |  | 2
Increases for positions taken in prior years |  |  | 346 |  |  | 61
Decreases for positions taken in prior years |  |  | - |  |  | (44)
Settlements with taxing authorities |  |  | (6) |  |  | (42)
Reduction resulting from lapse of applicable statute of limitations |  |  | (352) |  |  | (173)
Other increases (decreases) |  |  | 10 |  |  | (60)
Unrecognized Tax Benefits at August 31 |  | $ | 1,375 |  | $ | 1,309

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