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Accounting Policies (Details)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Supply agreement term	3 years
Amounts billed, payment term	30 days
Amounts billed, discount percentage if paid within discount term	1.00%
Amounts billed, payment term to receive discount percentage	15 days

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- Definition

Revenue, Performance Obligation, Description Of Payment Terms, Discount Percentage

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Revenue, Performance Obligation, Description Of Payment Terms, Discount Term

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Revenue, Performance Obligation, Description Of Payment Terms, Supply Agreement Term

+ References

No definition available.

+ Details

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X

- Definition

Revenue, Performance Obligation, Description Of Payment Terms, Term

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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