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15. Line of credit - PNC Bank (Details Narrative) - Revolving Credit Facility [Member] - PNC Bank National Association [Member] - USD ($) $ in Thousands | 12 Months Ended |
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Dec. 31, 2016 | Mar. 31, 2017
Line of Credit Facility [Line Items] |  |
Amount of revolving line of credit |  | $ 15,000
Credit line maturity date | May 01, 2017 |
Minimum fixed charge coverage ratio | 1.1 to 1.0 |
Interest rate on the revolving line of credit | PNC Base Rate plus 1.75% to 3.25%, or 1-, 2- or 3-month PNC LIBOR Rate plus 2.75% to 4.25%, with the rate being dependent on our level of fixed charge coverage |

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- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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