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4. Share-Based Compensation (Details) $ in Thousands	Apr. 01, 2017 USD ($)
Future share-based compensation expense	$ 9
Balance of fiscal year 2017 [Member]
Future share-based compensation expense	9
Fiscal Year 2018 [Member]
Future share-based compensation expense	$ 0

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=96867065&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_VestingAxis=ARCI_RemainderFiscal2017Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VestingAxis=ARCI_FiscalYear2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: