XML 31 R20.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Note 2 - Stock-based Compensation (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2017
Notes Tables |
Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  |  |  |  |  | Weighted- |  |  |  |  |  |  | Weighted- |
|  |  |  |  |  | average |  |  |  |  |  |  | average |
|  |  |  |  |  | Exercise |  |  |  |  |  |  | Exercise |
|  | 2017 |  |  | Price |  |  | 2016 |  |  | Price |
Outstanding, January 1 |  |  | 29,324 |  |  | $ | 23.67 |  |  |  | 31,949 |  |  | $ | 25.03 |
Exercised |  |  | (7,949 | ) |  |  | 29.87 |  |  |  | - |  |  |  | - |
Outstanding, June 30 |  |  | 21,375 |  |  | $ | 26.91 |  |  |  | 31,949 |  |  | $ | 25.03 |
Exercisable, June 30 |  |  | 21,375 |  |  | $ | 26.91 |  |  |  | 31,949 |  |  | $ | 25.03 |

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
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