XML 54 R39.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 15 - Supplemental Cash Flow Information (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Notes Tables |
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] |
|  | Year Ended December 31, |
|  | 201 7 |  |  | 201 6 |  |  | 201 5 |
Income taxes pai d |  | $ | 7,173 |  |  | $ | 5,076 |  |  | $ | 6,897 |
Interest pai d |  | $ | 727 |  |  | $ | 694 |  |  | $ | 523 |

X
- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration