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Supplemental cash flow information (Cash Flows) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||||
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Sep. 28, 2013
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Sep. 29, 2012
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Sep. 28, 2013
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Sep. 29, 2012
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Jun. 29, 2013
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Dec. 29, 2012
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Jun. 30, 2012
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Dec. 31, 2011
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| Increase (Decrease) Operating Capital [Line Items] | ||||||||
| Increase (Decrease) in Receivables | $ 572 | $ (3,319) | $ (6,869) | $ (21,223) | ||||
| Increase (Decrease) in Inventories | 1,847 | 6,623 | 7,351 | 11,831 | ||||
| Increase (Decrease) in Accrued Taxes Payable | 942 | 1,682 | 1,313 | 3,179 | ||||
| Increase (Decrease) in Prepaid Expense and Other Assets | 1,649 | (57) | 3,415 | 2,837 | ||||
| Increase (Decrease) in Accounts Payable and Accrued Liabilities | (3,605) | 3,619 | (13,183) | (1,191) | ||||
| Increase (Decrease) in Deferred Revenue and Customer Advances and Deposits | (3,267) | (1,086) | 1,126 | 2,646 | ||||
| Increase Decrease In Operating Capital | 1,862 | (7,462) | 6,847 | 1,921 | ||||
| Cash and cash equivalents | 6,819 | 4,187 | 6,819 | 4,187 | 6,460 | 6,840 | 3,247 | 2,378 |
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Opta Minerals Inc [Member]
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| Increase (Decrease) Operating Capital [Line Items] | ||||||||
| Cash and cash equivalents | $ 3,226 | $ 3,226 | $ 3,966 | |||||
| X | ||||||||||
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- Details
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The increase (decrease) during the reporting period of all taxes owed but not paid, including income, property and other taxes. No definition available.
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the amount of (a) prepayments by customers for goods or services to be provided at a later date, (b) the amount of customer money held in customer accounts, including security deposits, collateral for current or future transactions, initial payment of the cost of an acquisition or for the right to enter into a contract or agreement, (c) the increase (decrease) during the reporting period, excluding the portion taken into income, in the liability reflecting services yet to be performed by the reporting entity for which cash or other forms of consideration was received or recorded as a receivable, or (d) some combination of (a), (b), and (c). No definition available.
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period of all assets and liabilities used in operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets, or income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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