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Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2013 | Jan. 31, 2012 | Jan. 31, 2013 | Jan. 31, 2012
Revenues: |  |  |  |
Sales | $ 106,215 | $ 93,957 | $ 302,706 | $ 284,409
Interest income | 12,707 | 11,408 | 36,435 | 32,287
Total revenue | 118,922 | 105,365 | 339,141 | 316,696
Costs and expenses: |  |  |  |
Cost of sales, excluding depreciation shown below | 60,941 | 54,298 | 173,330 | 163,667
Selling, general and administrative | 18,775 | 17,175 | 53,982 | 50,094
Provision for credit losses | 25,189 | 20,899 | 70,499 | 62,056
Interest expense | 795 | 659 | 2,156 | 1,676
Depreciation and amortization | 712 | 594 | 2,070 | 1,697
Total costs and expenses | 106,412 | 93,625 | 302,037 | 279,190
Income before taxes | 12,510 | 11,740 | 37,104 | 37,506
Provision for income taxes | 4,530 | 4,436 | 13,728 | 14,160
Net income | 7,980 | 7,304 | 23,376 | 23,346
Less: Dividends on mandatorily redeemable preferred stock | (10) | (10) | (30) | (30)
Net income attributable to common stockholders | $ 7,970 | $ 7,294 | $ 23,346 | $ 23,316
Earnings per share: |  |  |  |
Basic (in Dollars per share) | $ 0.88 | $ 0.76 | $ 2.55 | $ 2.36
Diluted (in Dollars per share) | $ 0.84 | $ 0.73 | $ 2.43 | $ 2.28
Weighted average number of shares outstanding: |  |  |  |
Basic (in Shares) | 9,017,613 | 9,610,125 | 9,142,296 | 9,886,100
Diluted (in Shares) | 9,451,473 | 9,998,290 | 9,593,854 | 10,219,796

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
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