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Capital management (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Capital management
Common shares	$ 219,579	$ 211,527
Deficit	(160,693)	(129,994)
Long-term debt	$ 58,886	$ 81,533

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- References

No definition available.

+ Details

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Namespace Prefix:	prof_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

The amount of issued capital in the capital management.

+ References

No definition available.

+ Details

Name:	prof_CommonSharesCapitalManagement
Namespace Prefix:	prof_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Definition

The amount of deficit in the capital management.

+ References

No definition available.

+ Details

Name:	prof_DeficitCapitalManagement
Namespace Prefix:	prof_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Definition

The amount of long-term debt in the capital management.

+ References

No definition available.

+ Details

Name:	prof_LongTermDebtCapitalManagement
Namespace Prefix:	prof_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant