XML 38 R24.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Note 18 - Quarterly Financial Data (Unaudited) | 12 Months Ended
--- | ---
Dec. 31, 2018
Notes to Financial Statements |
Quarterly Financial Information [Text Block] | 18. Quarterly Financial Data (Unaudited)
Year 2018 |  | Quarter ended December 31 |  | Quarter ended September 30 |  | Quarter ended June 30 |  | Quarter ended March 31
Product revenue |  | $ | 26,950 |  |  | $ | 26,781 |  |  | $ | 30,542 |  |  | $ | 21,258 |
Total revenue |  |  | 26,956 |  |  |  | 26,787 |  |  |  | 30,548 |  |  |  | 21,264 |
Cost of product revenue |  |  | 7,001 |  |  |  | 8,282 |  |  |  | 8,152 |  |  |  | 7,845 |
Gross profit on product revenue |  |  | 19,949 |  |  |  | 18,499 |  |  |  | 22,390 |  |  |  | 13,413 |
Net income |  | $ | 7,717 |  |  | $ | 7,599 |  |  | $ | 10,092 |  |  | $ | (6,686 | )
Per common share information: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic net income per share |  | $ | 0.54 |  |  | $ | 0.53 |  |  | $ | 0.69 |  |  | $ | (0.46 | )
Basic common shares outstanding |  |  | 14,168 |  |  |  | 14,237 |  |  |  | 14,652 |  |  |  | 14,679 |
Diluted net income per share |  | $ | 0.54 |  |  | $ | 0.53 |  |  | $ | 0.68 |  |  | $ | (0.46 | )
Diluted common shares outstanding |  |  | 14,299 |  |  |  | 14,377 |  |  |  | 14,915 |  |  |  | 14,679 |
Year 2017 |  | Quarter ended December 31 |  | Quarter ended September 30 |  | Quarter ended June 30 |  | Quarter ended March 31
Product revenue |  | $ | 28,884 |  |  | $ | 27,178 |  |  | $ | 28,340 |  |  | $ | 23,381 |
Total revenue |  |  | 29,388 |  |  |  | 27,184 |  |  |  | 33,462 |  |  |  | 23,386 |
Cost of product revenue |  |  | 8,716 |  |  |  | 6,250 |  |  |  | 6,315 |  |  |  | 6,083 |
Gross profit on product revenue |  |  | 20,168 |  |  |  | 20,928 |  |  |  | 22,025 |  |  |  | 17,298 |
Net income |  | $ | 8,067 |  |  | $ | 6,887 |  |  | $ | 11,369 |  |  | $ | 5,493 |
Per common share information: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic net income per share |  | $ | 0.55 |  |  | $ | 0.47 |  |  | $ | 0.78 |  |  | $ | 0.38 |
Basic common shares outstanding |  |  | 14,596 |  |  |  | 14,579 |  |  |  | 14,588 |  |  |  | 14,576 |
Diluted net income per share |  | $ | 0.53 |  |  | $ | 0.46 |  |  | $ | 0.76 |  |  | $ | 0.37 |
Diluted common shares outstanding |  |  | 15,141 |  |  |  | 15,115 |  |  |  | 15,044 |  |  |  | 15,043 |

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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
Name: | us-gaap_QuarterlyFinancialInformationTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration