XML 39 R23.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Note 17 - Quarterly Financial Data (Unaudited) | 12 Months Ended
--- | ---
Dec. 31, 2016
Notes to Financial Statements |
Quarterly Financial Information [Text Block] | 17. Quarterly Financial Data (Unaudited)
Year 2016 |  | Quarter ended December 31 |  | Quarter ended September 30 |  | Quarter ended June 30 |  | Quarter ended March 31
Product revenue |  | $ | 28,296 |  |  | $ | 25,783 |  |  | $ | 26,575 |  |  | $ | 22,278 |
Total revenue |  |  | 28,726 |  |  |  | 25,789 |  |  |  | 26,581 |  |  |  | 22,283 |
Cost of product revenue |  |  | 7,539 |  |  |  | 4,998 |  |  |  | 6,065 |  |  |  | 5,425 |
Gross profit on product revenue |  |  | 20,757 |  |  |  | 20,785 |  |  |  | 20,510 |  |  |  | 16,853 |
Net income |  | $ | 8,085 |  |  | $ | 8,952 |  |  | $ | 8,615 |  |  | $ | 6,895 |
Per common share information: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic net income per share |  | $ | 0.56 |  |  | $ | 0.61 |  |  | $ | 0.59 |  |  | $ | 0.46 |
Basic common shares outstanding |  |  | 14,538 |  |  |  | 14,625 |  |  |  | 14,679 |  |  |  | 14,875 |
Diluted net income per share |  | $ | 0.54 |  |  | $ | 0.59 |  |  | $ | 0.57 |  |  | $ | 0.45 |
Diluted common shares outstanding |  |  | 14,979 |  |  |  | 15,077 |  |  |  | 15,111 |  |  |  | 15,307 |
Year 2015 |  | Quarter ended December 31 |  | Quarter ended September 30 |  | Quarter ended June 30 |  | Quarter ended March 31
Product revenue |  | $ | 25,607 |  |  | $ | 23,676 |  |  | $ | 22,898 |  |  | $ | 15,515 |
Total revenue |  |  | 30,894 |  |  |  | 23,681 |  |  |  | 22,904 |  |  |  | 15,520 |
Cost of product revenue |  |  | 6,290 |  |  |  | 5,176 |  |  |  | 5,274 |  |  |  | 4,313 |
Gross profit on product revenue |  |  | 19,317 |  |  |  | 18,500 |  |  |  | 17,624 |  |  |  | 11,202 |
Net income |  | $ | 11,042 |  |  | $ | 8,380 |  |  | $ | 7,820 |  |  | $ | 3,516 |
Per common share information: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic net income per share |  | $ | 0.74 |  |  | $ | 0.56 |  |  | $ | 0.52 |  |  | $ | 0.24 |
Basic common shares outstanding |  |  | 14,965 |  |  |  | 14,967 |  |  |  | 14,961 |  |  |  | 14,905 |
Diluted net income per share |  | $ | 0.72 |  |  | $ | 0.55 |  |  | $ | 0.51 |  |  | $ | 0.23 |
Diluted common shares outstanding |  |  | 15,353 |  |  |  | 15,316 |  |  |  | 15,336 |  |  |  | 15,330 |

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

X
- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1570-108306 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305 + Details
Name: | us-gaap_QuarterlyFinancialInformationTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration