XML 80 R60.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Share and Unit-Based Plans: (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 0 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 15, 2013 employee | Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 unit | Sep. 30, 2012
Share and unit-based plans |  |  |  |  |  |  |
Compensation cost under share and unit-based plans |  | $ 5,790 |  | $ 3,725 | $ 16,658 |  | $ 11,012
Capitalized share and unit-based compensation costs |  | 657 |  | 436 | 2,745 |  | 2,209
Non-vested share and unit based plans, weighted average exercise price |  |  |  |  |  |  |
Forfeited (in dollars per share) |  |  |  |  | $ 0.00 | [1] |
Options |  |  |  |  |  |  |
Forfeited (in shares) |  |  |  |  | 0 |  |
LTIP Units |  |  |  |  |  |  |
Share and unit-based plans |  |  |  |  |  |  |
Number of executives receiving grants (in employees) | 7 |  |  |  |  |  |
Look-back period (in years) |  |  |  |  | 1 year |  |
Compensation cost under share and unit-based plans |  | 4,743 |  | 2,778 | 12,393 |  | 6,646
Conversion rate of shares |  |  |  |  | 1 |  |
Share and unit-based plans, additional information |  |  |  |  |  |  |
Unrecognized compensation cost of share and unit-based plans |  | 4,744 |  |  | 4,744 |  |
Non-vested share and unit based plans, quantity |  |  |  |  |  |  |
Balance at the beginning of the period (in shares) |  |  |  |  | 200,000 |  |
Granted (in shares) |  |  |  |  | 332,189 |  |
Vested (in shares) |  |  |  |  | (200,000) |  |
Forfeited (in shares) |  |  |  |  | 0 |  |
Balance at the end of the period (in shares) |  | 332,189 |  |  | 332,189 |  |
Non-vested share and unit based plans, weighted average exercise price |  |  |  |  |  |  |
Balance at the beginning of the period (in dollars per share) |  |  |  |  | $ 38.63 | [1] |
Granted (in dollars per share) |  |  |  |  | $ 49.67 | [1] |
Vested (in dollars per share) |  |  |  |  | $ 38.63 | [1] |
Forfeited (in dollars per share) |  |  |  |  | $ 0.00 | [1] |
Balance at the end of the period (in dollars per share) |  | $ 49.67 | [1] |  | $ 49.67 | [1] |
Stock awards |  |  |  |  |  |  |
Share and unit-based plans |  |  |  |  |  |  |
Compensation cost under share and unit-based plans |  | 121 |  | 125 | 353 |  | 345
Share and unit-based plans, additional information |  |  |  |  |  |  |
Unrecognized compensation cost of share and unit-based plans |  | 779 |  |  | 779 |  |
Non-vested share and unit based plans, quantity |  |  |  |  |  |  |
Balance at the beginning of the period (in shares) |  |  |  |  | 20,924 |  |
Granted (in shares) |  |  |  |  | 8,963 |  |
Vested (in shares) |  |  |  |  | (10,886) |  |
Forfeited (in shares) |  |  |  |  | 0 |  |
Balance at the end of the period (in shares) |  | 19,001 |  |  | 19,001 |  |
Non-vested share and unit based plans, weighted average exercise price |  |  |  |  |  |  |
Balance at the beginning of the period (in dollars per share) |  |  |  |  | $ 49.36 | [1] |
Granted (in dollars per share) |  |  |  |  | $ 61.84 | [1] |
Vested (in dollars per share) |  |  |  |  | $ 46.70 | [1] |
Forfeited (in dollars per share) |  |  |  |  | $ 0.00 | [1] |
Balance at the end of the period (in dollars per share) |  | $ 56.77 | [1] |  | $ 56.77 | [1] |
Stock units |  |  |  |  |  |  |
Share and unit-based plans |  |  |  |  |  |  |
Compensation cost under share and unit-based plans |  | 674 |  | 383 | 3,165 |  | 2,991
Share and unit-based plans, additional information |  |  |  |  |  |  |
Unrecognized compensation cost of share and unit-based plans |  | 3,650 |  |  | 3,650 |  |
Non-vested share and unit based plans, quantity |  |  |  |  |  |  |
Balance at the beginning of the period (in shares) |  |  |  |  | 114,677 |  |
Granted (in shares) |  |  |  |  | 67,920 |  |
Vested (in shares) |  |  |  |  | (45,279) |  |
Forfeited (in shares) |  |  |  |  | 0 |  |
Balance at the end of the period (in shares) |  | 137,318 |  |  | 137,318 |  |
Non-vested share and unit based plans, weighted average exercise price |  |  |  |  |  |  |
Balance at the beginning of the period (in dollars per share) |  |  |  |  | $ 52.19 | [1] |
Granted (in dollars per share) |  |  |  |  | $ 62.01 | [1] |
Vested (in dollars per share) |  |  |  |  | $ 51.29 | [1] |
Forfeited (in dollars per share) |  |  |  |  | $ 0.00 | [1] |
Balance at the end of the period (in dollars per share) |  | $ 57.24 | [1] |  | $ 57.24 | [1] |
Stock options |  |  |  |  |  |  |
Share and unit-based plans |  |  |  |  |  |  |
Compensation cost under share and unit-based plans |  | 4 |  | 18 | 12 |  | 18
Share and unit-based plans, additional information |  |  |  |  |  |  |
Unrecognized compensation cost of share and unit-based plans |  | 64 |  |  | 64 |  |
Options |  |  |  |  |  |  |
Balance at beginning of period (in shares) |  |  |  |  | 12,768 |  |
Granted (in shares) |  |  |  |  | 0 |  |
Exercised (in shares) |  |  |  |  | (2,700) |  |
Balance at end of period (in shares) |  | 10,068 |  |  | 10,068 |  |
Weighted Average Exercise Price |  |  |  |  |  |  |
Balance at beginning of period (in dollars per share) |  |  |  |  | $ 54.69 |  |
Granted (in dollars per share) |  |  |  |  | $ 0.00 |  |
Exercised (in dollars per share) |  |  |  |  | $ 36.51 |  |
Balance at end of period (in dollars per share) |  | $ 59.57 |  |  | $ 59.57 |  |
Stock appreciation rights ("SARs") |  |  |  |  |  |  |
Share and unit-based plans |  |  |  |  |  |  |
Compensation cost under share and unit-based plans |  | 0 |  | 210 | 0 |  | 291
Non-vested share and unit based plans, quantity |  |  |  |  |  |  |
Balance at the beginning of the period (in shares) |  |  |  |  | 1,164,185 |  |
Granted (in shares) |  |  |  |  | 0 |  |
Exercised (in shares) |  |  |  |  | (93,194) |  |
Forfeited (in shares) |  |  |  |  | 0 |  |
Balance at the end of the period (in shares) |  | 1,070,991 |  |  | 1,070,991 |  |
Non-vested share and unit based plans, weighted average exercise price |  |  |  |  |  |  |
Balance at the beginning of the period (in dollars per share) |  |  |  |  | $ 56.66 |  |
Granted (in dollars per share) |  |  |  |  | $ 0.00 |  |
Exercised (in dollars per share) |  |  |  |  | $ 56.63 |  |
Forfeited (in dollars per share) |  |  |  |  | $ 0.00 | [1] |
Balance at the end of the period (in dollars per share) |  | $ 56.66 |  |  | $ 56.66 |  |
Phantom stock units |  |  |  |  |  |  |
Share and unit-based plans |  |  |  |  |  |  |
Compensation cost under share and unit-based plans |  | 248 |  | 211 | 735 |  | 721
Share and unit-based plans, additional information |  |  |  |  |  |  |
Unrecognized compensation cost of share and unit-based plans |  | $ 1,155 |  |  | $ 1,155 |  |
Non-vested share and unit based plans, quantity |  |  |  |  |  |  |
Balance at the beginning of the period (in shares) |  |  |  |  | 0 |  |
Granted (in shares) |  |  |  |  | 32,063 |  |
Vested (in shares) |  |  |  |  | (12,377) |  |
Forfeited (in shares) |  |  |  |  | 0 |  |
Balance at the end of the period (in shares) |  | 19,686 |  |  | 19,686 |  |
Non-vested share and unit based plans, weighted average exercise price |  |  |  |  |  |  |
Balance at the beginning of the period (in dollars per share) |  |  |  |  | $ 0.00 | [1] |
Granted (in dollars per share) |  |  |  |  | $ 58.94 | [1] |
Vested (in dollars per share) |  |  |  |  | $ 59.38 | [1] |
Forfeited (in dollars per share) |  |  |  |  | $ 0.00 | [1] |
Balance at the end of the period (in dollars per share) |  | $ 58.66 | [1] |  | $ 58.66 | [1] |
[1] | Value represents the weighted-average grant date fair value.

X
- Definition Represents the number of shares of common stock into which each share-based award is convertible upon the occurrence of specified events ad subject to the satisfaction of applicable vesting conditions. + References No definition available. + Details
Name: | mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConversionRate
Namespace Prefix: | mac_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the weighted average exercise price for equity-based awards, other than stock (unit) options, exercised during the period. + References No definition available. + Details
Name: | mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisesInPeriodWeightedAverageExercisePrice
Namespace Prefix: | mac_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the look-back period used to determine the volatilities of the returns on the price of the entity's and peer group's stocks. + References No definition available. + Details
Name: | mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsLookBackPeriod
Namespace Prefix: | mac_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of executives officers receiving a grant of share-based payment awards under the plan. + References No definition available. + Details
Name: | mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfExecutiveOfficersReceivingGrants
Namespace Prefix: | mac_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the weighted average fair value of options exercised. + References No definition available. + Details
Name: | mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | mac_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the weighted average fair value of options forfeited. + References No definition available. + Details
Name: | mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedDuringPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | mac_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value of option awards for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References No definition available. + Details
Name: | mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageGrantDateFairValue
Namespace Prefix: | mac_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average grant date fair value at which grantees can acquire the shares reserved for issuance under the stock award plan other than options. + References No definition available. + Details
Name: | mac_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsOutstandingWeightedAverageGrantDateFairValue
Namespace Prefix: | mac_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, 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 2 -Subparagraph (h)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Unrecognized cost of unvested share-based compensation awards. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAdditionalGeneralDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting 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 (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + 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)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued 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
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding 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 (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting 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 (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of non-option equity instruments exercised by participants. + 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)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. + 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)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option 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)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net number of share options (or share units) granted during 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 (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of share options (or share units) exercised during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration