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Credit facilities (Narrative) (Details)	Oct. 03, 2016 USD ($)	Mar. 30, 2017 USD ($)	Feb. 11, 2016 USD ($)	Aug. 07, 2013 USD ($)	Aug. 07, 2013 CAD ($)
RCM Credit Agreement [Member]
Disclosure of detailed information about borrowings [line items]
Aggregate principal amount of notes				$ 6,400,000
Remaining principal portion of notes		$ 5,600,000
Interest rate				12.00%	12.00%
RCM Credit Agreement [Member] | Canadian Dollar [Member]
Disclosure of detailed information about borrowings [line items]
Aggregate principal amount of notes					$ 8,500,000
Subordinated Secured Credit Facility [Member]
Disclosure of detailed information about borrowings [line items]
Aggregate principal amount of notes			$ 2,900,000
Remaining principal portion of notes			$ 1,600,000
Interest rate			10.00%
Repayment of principal of subordinated facility	$ 1,300,000

X

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2018-01-01
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- Definition

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+ References

No definition available.

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- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Number 1
-IssueDate 2018-01-01
-Paragraph 112
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- Definition

The cash outflow for repayments of subordinated liabilities. [Refer: Subordinated liabilities]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Number 7
-IssueDate 2018-01-01
-Paragraph 17
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-URIDate 2018-03-16

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- Definition

Remaining principal portion of notes.

+ References

No definition available.

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