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Note 7 - Loan Payable (Details Textual) $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 20, 2017 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | [1] | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | [1] | Oct. 01, 2018 | Sep. 30, 2018 | Jan. 24, 2018 | Dec. 31, 2017 USD ($) | Jan. 19, 2017 USD ($)
Payments of Financing Costs, Total | $ 600 |  | $ 13 | $ 4 | $ 604 |  |  |  |  |
Foreign Exchange Risk [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | 3,500 |  | $ 3,500 |  |  |  |  |  |
Line of Credit Facility Covenant Period |  |  |  | 1 year 180 days |  |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset, Total |  | 21,600 |  | $ 21,600 |  |  |  |  |  |
Second Interim Amendment [Member] |  |  |  |  |  |  |  |  |  |
Credit Agreement, Maximum Aggregate Amount Held in Account With Certain Bank |  | $ 3,000 |  | $ 3,000 |  |  |  |  |  |
Bank of Montreal and Royal Bank of Canada [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 140,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 4 years |  |  |  |  |  |  |  |  |
Maximum Total Funded Debt to EBITDA Ratio | 2.25 |  |  |  |  | 2.25 | 2.5 |  |  |
Repayment Obligation, Percentage of Excess Cash Flow | 50.00% |  |  |  |  |  |  |  |  |
Minimum Fixed Charge Coverage Ratio |  | 1.2 |  | 1.2 |  |  |  |  |  |
Maximum Annual Capital Expenditures Requirement |  |  |  | $ 50,000 |  |  |  |  |  |
Line of Credit Facility, Maximum Funded Share Repurchases Ceiling |  |  |  | 20,000 |  |  |  |  |  |
Maximum Ratio of Funded Share Repurchases to 12 Months Trailing EDITDA |  |  |  |  |  |  |  | 1.5 |  |
Bank of Montreal and Royal Bank of Canada [Member] | Total Loans Do Not Exceed 1.5 Times of Trailing 12 Months EBITDA [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Funded Share Repurchases Ceiling |  |  |  | $ 40,000 |  |  |  |  |  |
Bank of Montreal and Royal Bank of Canada [Member] | Non-revolving Facility C [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 35,500 |  |  |  |  |  |  |  |  | $ 40,000
Bank of Montreal and Royal Bank of Canada [Member] | Non-revolving Facility D [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 84,500 |  |  |  |  |  |  |  |  |
Long-term Line of Credit, Total | 84,500 |  |  |  |  |  |  |  |  |
Bank of Montreal and Royal Bank of Canada [Member] | Revolving Credit Facility A [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 5,000 |  |  |  |  |  |  |  |  |
Bank of Montreal and Royal Bank of Canada [Member] | Revolving Reducing Term Facility B [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 15,000 |  |  |  |  |  |  |  |  |
Bank of Montreal and Royal Bank of Canada [Member] | Credit Facility B and C [Member] | Draws for Share Repurchases [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 4 years |  |  |  |  |  |  |  |  |
Bank of Montreal and Royal Bank of Canada [Member] | Credit Facility B and C [Member] | Draws for Acquisitions [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 5 years |  |  |  |  |  |  |  |  |
Bank of Montreal and Royal Bank of Canada [Member] | Credit Facility B and C [Member] | Draws for FFTH Capital Expenditures [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term | 7 years |  |  |  |  |  |  |  |  |
Bank of Nova [member] | Corporate Credit Card Program [Member] |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  | $ 5,000 |
[1] | The Company has initially applied ASC 2014-09 (Topic 606) using the modified retrospective method. Under this method, the comparative information is not restated.

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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