XML 31 R20.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Note 5 - Earnings Per Share (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2016
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended March 31, |
|  | 2016 |  |  | 2015 |
Net income |  | $ | 6,373,489 |  |  | $ | 4,177,889 |
Basic earnings per common share |  | $ | 0.54 |  |  | $ | 0.52 |
Diluted earnings per common share |  | $ | 0.53 |  |  | $ | 0.52 |
Weighted average common shares outstanding |  |  | 11,793,620 |  |  |  | 7,975,910 |
Weighted average common shares issuable upon exercise of stock options and under the employee stock purchase plan |  |  | 160,329 |  |  |  | 121,534 |
Weighted average common and common equivalent shares outstanding |  |  | 11,953,949 |  |  |  | 8,097,444 |

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

X
- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration