v3.3.1.900

Income Taxes - Net Operating Loss Carryforwards for Tax Purposes (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($)
Operating Loss Carryforwards [Line Items] |
Amounts | $ 252,081
Stock Adjustments | 4,989
Total | 257,070
Expiration Dates 2030 [Member] |
Operating Loss Carryforwards [Line Items] |
Amounts | 4,083
Stock Adjustments | 750
Total | $ 4,833
Expiration Dates | 2030
Expiration Dates 2031 [Member] |
Operating Loss Carryforwards [Line Items] |
Amounts | $ 18,642
Stock Adjustments | 1,012
Total | $ 19,654
Expiration Dates | 2031
Expiration Date 2032 [Member] |
Operating Loss Carryforwards [Line Items] |
Amounts | $ 51,931
Stock Adjustments | 2,724
Total | $ 54,655
Expiration Dates | 2032
Expiration Date 2033 [Member] |
Operating Loss Carryforwards [Line Items] |
Amounts | $ 616
Stock Adjustments | 503
Total | $ 1,119
Expiration Dates | 2033
Expiration Date 2034 [Member] |
Operating Loss Carryforwards [Line Items] |
Amounts | $ 56,511
Total | $ 56,511
Expiration Dates | 2034
Expiration Date 2035 [Member] |
Operating Loss Carryforwards [Line Items] |
Amounts | $ 120,298
Total | $ 120,298
Expiration Dates | 2035

X
- Definition Federal Net Operating Loss Carry Forwards Attributable To Stock Option Benefits + References No definition available. + Details
Name: | arex_FederalNetOperatingLossCarryForwardsAttributableToStockOptionBenefits
Namespace Prefix: | arex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The sum of domestic, foreign and state and local operating loss carry forwards, including amounts attributable to stock option benefits, available to reduce future taxable income under enacted tax laws. + References No definition available. + Details
Name: | arex_OperatingLossCarryForwardsAndStockOptionAdjustments
Namespace Prefix: | arex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Operating Loss Carryforwards Expiration Date Start + References No definition available. + Details
Name: | arex_OperatingLossCarryforwardsExpirationDateStart
Namespace Prefix: | arex_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
Name: | us-gaap_OperatingLossCarryforwards
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_OperatingLossCarryforwardsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TaxPeriodAxis=arex_ExpirationDateTwoThousandAndThirtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=arex_ExpirationDateTwoThousandAndThirtyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=arex_ExpirationDateTwoThousandAndThirtyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=arex_ExpirationDateTwoThousandAndThirtyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=arex_ExpirationDateTwoThousandAndThirtyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TaxPeriodAxis=arex_ExpirationDateTwoThousandAndThirtyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |