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Note 9 - Line of Credit (Details Textual) - USD ($) $ in Thousands | Dec. 08, 2017 | Feb. 14, 2018 | Feb. 13, 2018 | Dec. 30, 2017 | Dec. 31, 2016 | Feb. 20, 2009
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Long-term Line of Credit, Noncurrent |  |  |  | $ 27,279 | $ 14,311 |
Citizens Bank of Pennsylvania [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 35,000
Line of Credit, Loan Covenants, Cash Dividend | $ 12,400 |  |  |  |  |
Line of Credit, Loan Covenants, Waiver Granted, Amount of Legal Settlement and Office Closure Expenses Excluded | 1,300 |  |  |  |  |
Line of Credit, Loan Covenants, Waiver Granted, Consulting Expenses Excluded | 1,000 |  |  |  |  |
Line of Credit, Loan Covenants, Waiver Granted, Goodwill Impairment Expenses Excluded | $ 4,600 |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  |  | 2.70% | 2.30% |
Long-term Line of Credit, Noncurrent |  |  |  | $ 27,300 | $ 14,300 |
Letters of Credit Outstanding, Amount |  |  |  | 800 | $ 800 |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  | $ 6,900 |  |
Citizens Bank of Pennsylvania [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 40,000 | $ 35,000 |  |  |
Citizens Bank of Pennsylvania [Member] | Letter of Credit [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 5,000

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- Definition The amount of a cash dividend allowed under a line of credit loan amendment. + References No definition available. + Details
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- Definition Represents the amount of consulting expenses expressly excluded from the calculation of loan covenants pertaining to the line of credit. + References No definition available. + Details
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X
- Definition Represents the amount of goodwill impairment expenses expressly excluded from the calculation of loan covenants pertaining to the line of credit. + References No definition available. + Details
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X
- Definition Represents the amount of legal settlement and office closure expenses expressly excluded from the calculation of loan covenants pertaining to the line of credit. + References No definition available. + Details
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X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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X
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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X
- Definition The carrying value as of the balance sheet date of the noncurrent portion 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://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1314-112600 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1336-112600 + Details
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- Details
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