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Employee Compensation Plans - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified | 1 Months Ended |
--- | --- | ---
Jul. 31, 2013 | Jun. 30, 2013
Final Payments Under Existing Cash Bonus Program |  |
Employee Compensation Plans |  |
Accrued bonuses |  | $ 10.9
Management Annual Incentive Plan | Minimum |  |
Employee Compensation Plans |  |
Incentive plan payout percentages of target values |  | 0.00%
Management Annual Incentive Plan | Maximum |  |
Employee Compensation Plans |  |
Incentive plan payout percentages of target values |  | 200.00%
Management Annual Incentive Plan | Percentage accrued |  |
Employee Compensation Plans |  |
Incentive plan payout percentages of target values |  | 100.00%
Annual Incentive Plan |  |
Employee Compensation Plans |  |
Accrued bonuses |  | 11.0
Long Term Incentive Plan |  |
Employee Compensation Plans |  |
Incentive plan, number of performance units granted in period | 31,100 |
Incentive plan payout, performance below minimum target threshold |  | $ 0
Long Term Incentive Plan | Minimum |  |
Employee Compensation Plans |  |
Incentive plan payout percentages of target values | 50.00% |
Long Term Incentive Plan | Maximum |  |
Employee Compensation Plans |  |
Incentive plan payout percentages of target values | 200.00% |

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- Definition Incentive plan payout percentages of target values based on performance above a minimum threshold + References No definition available. + Details
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- Definition Incentive plan payout if actual performance is below established minimum target thresholds + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -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. + Details
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