The percentage of stock dividend declared for common shareholders.

No definition available.

Name:	adk_CommonStockDividendRatePercentage
Namespace Prefix:	adk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Convertible debt repaid

+ References

No definition available.

+ Details

Name:	adk_Convertibledebtrepaid
Namespace Prefix:	adk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the percentage of the conversion price that the weighted average price of the entity's common stock must exceed in order for the notes to be convertible.

+ References

No definition available.

+ Details

Name:	adk_DebtInstrumentConversionObligationCommonStockWeightedAveragePriceAsPercentageOfConversionPrice
Namespace Prefix:	adk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Face Amount With Extended Maturity Date

+ References

No definition available.

+ Details

Name:	adk_DebtInstrumentFaceAmountWithExtendedMaturityDate
Namespace Prefix:	adk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Subscription Accepted Not Funded, Face Amount

+ References

No definition available.

+ Details

Name:	adk_DebtInstrumentSubscriptionAcceptedNotFundedFaceAmount
Namespace Prefix:	adk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Notes Reduction, 2014 Notes Surrendered and Cancelled in Payment for 2015 Notes

+ References

No definition available.

+ Details

Name:	adk_NotesReduction2014NotesSurrenderedandCancelledinPaymentfor2015Notes
Namespace Prefix:	adk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of Days Written Notice to prepay convertible debt

+ References

No definition available.

+ Details

Name:	adk_NumberofDaysWrittenNoticetoprepayconvertibledebt
Namespace Prefix:	adk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: 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(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

+ Details

Name:	us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdTradingDays
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromConvertibleDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Equity impact of the value of stock bought back by the entity at the exercise price or redemption price.

+ References

Reference 1: 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

+ Details

Name:	us-gaap_StockRedeemedOrCalledDuringPeriodValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=adk_ConvertibleSubordinatedPromissoryNotesIssuedIn2010Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=adk_ConvertibleSubordinatedPromissoryNotesIssuedIn2011Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=adk_ConvertibleSubordinatedPromissoryNotesIssuedinJuly2012Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=adk_ConvertibleSubordinatedPromissoryNotesIssuedinMarch2014Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=adk_ConvertibleSubordinatedNotesDueApril302017ConvertibleNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=adk_AnthonyCantoneandCantoneAssetManagementLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=adk_ConvertibleSubordinatedPromissoryNotesIssuedIn2012Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=adk_ConvertibleSubordinatedPromissoryNotesIssuedinMarch2015Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=adk_A2015ConvertibleSubordinatedNotesSubscriptionAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

NOTES PAYABLE AND OTHER DEBT (Convertible Debt) (Details)						3 Months Ended		9 Months Ended	12 Months Ended
	Jan. 10, 2017 USD ($)	Oct. 06, 2016 USD ($)	Jul. 31, 2015 USD ($) day $ / shares	Jul. 30, 2015 USD ($) day $ / shares	Apr. 30, 2015 USD ($)	Mar. 31, 2015 USD ($) $ / shares	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2016 USD ($) $ / shares	Dec. 31, 2015 USD ($)	Dec. 08, 2016	Jul. 29, 2015 $ / shares	Jun. 30, 2015 USD ($)	May 05, 2015	Mar. 28, 2014	Dec. 31, 2012 $ / shares	Oct. 22, 2012	Jul. 02, 2012 USD ($) $ / shares
Debt Instrument [Line Items]
Fixed interest rate (as a percent)													18.00%
Loss on extinguishment of debt									$ 185,000	$ (680,000)
Proceeds from convertible debt									0	2,049,000
Maximum borrowing capacity						$ 8,800,000
Repayment of debt		$ 2,400,000			$ 6,500,000
Convertible debt repaid							$ 6,500,000
Notes Reduction, 2014 Notes Surrendered and Cancelled in Payment for 2015 Notes								$ 5,700,000
Debt Instrument, Face Amount													$ 6,400,000
Debt instrument, outstanding amount									82,357,000	125,676,000
Convertible debt issued in 2010
Debt Instrument [Line Items]
Stock dividend (as a percent)																	5.00%
Subordinated Convertible Notes Issued in 2011
Debt Instrument [Line Items]
Stock dividend (as a percent)																	5.00%
Subordinated convertible debt
Debt Instrument [Line Items]
Proceeds from issuance of debt									$ 7,500,000
Fixed interest rate (as a percent)			10.00%	10.00%														8.00%
Conversion price (in dollars per share) \| $ / shares			$ 4.25	$ 4.25					$ 3.97							$ 4.17		$ 3.97
Stock dividend (as a percent)																	5.00%
Debt Instrument, Convertible, Threshold Trading Days \| day			60
Debt Instrument, Face Amount			$ 1,500,000.0	$ 1,500,000.0														$ 6,400,000.0
Convertible Subordinated Promissory Notes Issued in March 2014
Debt Instrument [Line Items]
Fixed interest rate (as a percent)															10.00%
Debt instrument, outstanding amount									$ 9,200,000	$ 9,200,000
Convertible Notes
Debt Instrument [Line Items]
Fixed interest rate (as a percent)											10.00%
Anthony Cantone and Cantone Asset Management LLC
Debt Instrument [Line Items]
Repayment of debt				$ 4,800,000
Ownership percentage														5.00%
Debt Instrument, Face Amount			$ 1,500,000
Convertible Debt [Member]
Debt Instrument [Line Items]
Fixed interest rate (as a percent)			14.00%
Convertible Debt [Member] \| Subordinated convertible debt
Debt Instrument [Line Items]
Fixed interest rate (as a percent)									10.00%
Convertible Debt [Member] \| Convertible Subordinated Promissory Notes Issued in 2012 [Member]
Debt Instrument [Line Items]
Fixed interest rate (as a percent)			10.00%										8.00%
Convertible Debt [Member] \| Convertible note issued in 2015
Debt Instrument [Line Items]
Fixed interest rate (as a percent)						10.00%
Conversion price (in dollars per share) \| $ / shares				$ 4.25		$ 4.25						$ 3.97
Percentage of the conversion price that the weighted average price of the entity's common stock must exceed in order for the notes to be convertible				150.00%		125.00%
Number of days written notice to prepay convertible debt ( period in days)				60 days
Debt Instrument, Convertible, Threshold Trading Days \| day				10
Debt Instrument, Subscription Accepted Not Funded, Face Amount					800,000
Debt Instrument, Face Amount					$ 6,000,000	$ 1,700,000
Debt Instrument, Face Amount With Extended Maturity Date			$ 1,500,000
Debt Instrument, Redemption Price, Percentage				115.00%
Debt instrument, outstanding amount									$ 7,700,000
Convertible Debt [Member] \| 2015 Convertible Subordinated Notes Subscription Agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 8,500,000
Subsequent Event \| Convertible Notes
Debt Instrument [Line Items]
Debt instrument, outstanding amount	$ 1,000,000
Stock redeemed or called during period, value	$ 6,700,000