00 - Document - Document and Entity Information link:presentationLink link:definitionLink link:calculationLink 0110 - Statement - Condensed Balance Sheets link:presentationLink link:definitionLink link:calculationLink 0111 - Statement - Condensed Balance Sheets (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 0120 - Statement - Condensed Statements of Operations (Unaudited) link:presentationLink link:definitionLink link:calculationLink 0130 - Statement - Condensed Statements of Cash Flows (Unaudited) link:presentationLink link:definitionLink link:calculationLink 0131 - Statement - Condensed Statements of Cash Flows (Unaudited) (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 0201 - Disclosure - Basis of Presentation link:presentationLink link:definitionLink link:calculationLink 0202 - Disclosure - Short-Term Investments link:presentationLink link:definitionLink link:calculationLink 0203 - Disclosure - Inventories link:presentationLink link:definitionLink link:calculationLink 0204 - Disclosure - Earnings Per Common Share (EPS) link:presentationLink link:definitionLink link:calculationLink 0205 - Disclosure - Stock-based Compensation link:presentationLink link:definitionLink link:calculationLink 0206 - Disclosure - Segment Information link:presentationLink link:definitionLink link:calculationLink 0207 - Disclosure - Income Taxes link:presentationLink link:definitionLink link:calculationLink