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COMMON STOCK EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Balance as of beginning of period (shares) | 41,961,534 |
Balance as of beginning of period | $ 887,384 |
Net income | 7,693 | 60,206
Other comprehensive (loss) income | (183) | 83
Common stock issued under stock plans | 4,926 |
Cash dividend declared ($.42 per share) | (17,649) |
Treasury stock and other | (251) |
Balance as of end of period (shares) | 42,058,818 |
Balance as of end of period | 881,920 |
Cash dividend declared per share (usd per share) | $ 0.42 | $ 0.40
Common Stock [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Balance as of beginning of period (shares) | 41,962,000 |
Balance as of beginning of period | 112,563 |
Common stock issued under stock plans (shares) | 111,000 |
Common stock issued under stock plans | 77 |
Treasury stock and other (shares) | (14,000) |
Balance as of end of period (shares) | 42,059,000 |
Balance as of end of period | 112,640 |
Premium on Common Stock [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Balance as of beginning of period | 300,196 |
Common stock issued under stock plans | 1,544 |
Balance as of end of period | 301,740 |
Accumulated Other Comprehensive (Loss) Income [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Balance as of beginning of period | (1,621) |
Other comprehensive (loss) income | (183) |
Balance as of end of period | (1,804) |
Treasury Stock And Other [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Balance as of beginning of period | (128,638) |
Common stock issued under stock plans | 3,305 |
Treasury stock and other | (251) |
Balance as of end of period | (125,584) |
Retained Earnings [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Balance as of beginning of period | 604,884 |
Net income | 7,693 |
Cash dividend declared ($.42 per share) | (17,649) |
Balance as of end of period | $ 594,928 |

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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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