The maximum income tax withholdings each participant is allowed to have wittheld under ICP plan.

No definition available.

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- Definition

Number of performance periods under ICP Plans awarded based on the level of performance achevied by Piedmont for a rolling performance period.

+ References

No definition available.

+ Details

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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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Balance Type:	debit
Period Type:	duration

- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

+ References

No definition available.

+ Details

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, 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)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

+ References

+ Details

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Balance Type:	na
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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

+ Details

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Balance Type:	na
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Period Type:	duration

- Definition

Purchase price of common stock expressed as a percentage of its fair value.

+ References

No definition available.

+ Details

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Employee Share Based Plans (Details) (USD $)	3 Months Ended		6 Months Ended			3 Months Ended	36 Months Ended	1 Months Ended	6 Months Ended	60 Months Ended
Employee Share Based Plans (Details) (USD $)	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013	Oct. 31, 2013	Apr. 30, 2014 Stock Compensation Plan [Member]	Dec. 15, 2013 Retention Stock Unit Award Eligible Officers [Member] Stock Compensation Plan [Member]	Dec. 31, 2011 Retention Stock Unit Award President And Cheif Executive Officer [Member] Stock Compensation Plan [Member]	Apr. 30, 2014 Retention Stock Unit Award President And Cheif Executive Officer [Member] Stock Compensation Plan [Member]	Dec. 15, 2016 Retention Stock Unit Award President And Cheif Executive Officer [Member] Stock Compensation Plan [Member]
Employee Share Based Plans Details [Line Items]
Unvested Shares Issued To CEO								64,700
Incentive Compensation Plan Percentage Of Common Stock Vested									In accordance with the vesting schedule, 20% of the units vest on December 15, 2014, 30% of the units vest on December 15, 2015 and 50% of the units vest on December 15, 2016.
Share-based Compensation Expense	$ 2,103,000	$ 1,801,000	$ 4,203,000	$ 3,657,000
Liability	$ 11,282,000		$ 11,282,000		$ 11,098,000
Employee Stock Purchase Plan Exercise Price As A Percentage Of Fair Market Value	95.00%
Number Of Performance Periods Under Icp Plans Performance Awards						3 years
Maximum Statutory Withholdings Allowed	50.00%		50.00%
Share Based Compensation Arrangement By Share Based Payment Award Requisite Service Period							3 years			5 years