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Stockholders' Equity (Long Term Incentive Plan) (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended |  | 0 Months Ended | 9 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 Full Performance Criteria [Member] First Three Years [Member] JD Alexander [Member] | Jun. 30, 2013 Full Performance Criteria [Member] First Three Years [Member] Named Executive Officers [Member] | Jun. 30, 2013 Full Performance Criteria [Member] Fourth Year [Member] JD Alexander [Member] | Jun. 30, 2013 Full Performance Criteria [Member] Fourth Year [Member] Named Executive Officers [Member] | Jun. 30, 2013 Full Performance Criteria [Member] Fifth Year [Member] JD Alexander [Member] | Jun. 30, 2013 Full Performance Criteria [Member] Fifth Year [Member] Named Executive Officers [Member] | Jun. 30, 2013 Performance Shares [Member] | Jun. 30, 2013 Performance Shares [Member] | May 26, 2011 Performance Shares [Member] | Apr. 19, 2012 Performance Shares [Member] JD Alexander [Member] | May 26, 2011 Performance Shares [Member] Named Executive Officers [Member] | Jun. 30, 2013 Performance Shares [Member] Full Performance Criteria [Member] | Jun. 30, 2013 Performance Shares [Member] Full Performance Criteria [Member] First Three Years [Member] | Jun. 30, 2013 Performance Shares [Member] Full Performance Criteria [Member] Fourth Year [Member] | Jun. 30, 2013 Performance Shares [Member] Full Performance Criteria [Member] Fifth Year [Member] | Jun. 30, 2013 Performance Shares [Member] Partial Performance Criteria [Member] | Jun. 30, 2013 Performance Shares [Member] Vesting Immediately [Member] Full Performance Criteria [Member] | Jun. 30, 2013 Performance Shares [Member] Vesting Immediately [Member] Partial Performance Criteria [Member] | Jun. 30, 2013 Performance Shares [Member] Vesting on First Anniversary of Achievement Date [Member] Full Performance Criteria [Member] | Jun. 30, 2013 Performance Shares [Member] Vesting on First Anniversary of Achievement Date [Member] Partial Performance Criteria [Member] | Jun. 30, 2013 Performance Shares [Member] Vesting on Second Anniversary of Achievement Date [Member] Full Performance Criteria [Member] | Jun. 30, 2013 Performance Shares [Member] Vesting on Second Anniversary of Achievement Date [Member] Partial Performance Criteria [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plan duration |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares approved for issuance |  |  |  |  |  |  |  |  |  |  |  |  | 152,403 |  |  |  |  |  |  |  |  |  |  |  |  |
Shares granted |  |  |  |  |  |  |  |  |  |  |  |  |  | 93,793 | 58,610 |  |  |  |  |  |  |  |  |  |  |
Fair value of shares awarded |  |  |  |  |  |  |  |  |  |  |  | $ 310 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assumed annual volatility |  |  |  |  |  |  |  |  |  |  |  | 53.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assumed risk free interest rate |  |  |  |  |  |  |  |  |  |  |  | 2.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock trading window |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 days |  |  |  | 20 days |  |  |  |  |  |
Base stock price |  |  |  |  | $ 46.00 | $ 50.40 | $ 49.22 | $ 53.93 | $ 52.44 | $ 57.46 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trading value of common stock, percentage of base price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200.00% | 214.00% | 228.00% | 90.00% |  |  |  |  |  |
Percentage of award awarded |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  | 50.00% |  |  |  |  |  |
Vesting rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% | 25.00% | 25.00% | 12.50% | 25.00% | 12.50%
Stock-based compensation expense | $ 468 | $ 306 | $ 783 | $ 552 |  |  |  |  |  |  | $ 27 | $ 54 |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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