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CASH, CASH EQUIVALENTS AND INVESTMENTS | 6 Months Ended
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Jun. 30, 2017
Cash And Cash Equivalents [Abstract] |
CASH, CASH EQUIVALENTS AND INVESTMENTS |
4. | CASH, CASH EQUIVALENTS AND INVESTMENTS:
The Company considers all highly liquid debt instruments purchased with an original maturity of three months or less to be cash equivalents. The Company classifies its remaining investments as available-for-sale. These securities are carried at fair market value, with unrealized gains and losses reported in shareholders’ equity. Gains or losses on securities sold are based on the specific identification method. Investments as of June 30, 2017 and December 31, 2016 consisted of the following (in thousands):
|  | Amortized |  |  | Unrealized |  |  | Aggregate Fair |
Investment Classification |  | Cost |  |  | Gains |  |  | (Losses) |  |  | Market Value |
June 30, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 1,770 |  |  | $ | 1 |  |  | $ | (1 | ) |  | $ | 1,770 |
Commercial paper |  |  | 3,994 |  |  |  | — |  |  |  | (1 | ) |  |  | 3,993 |
Corporate bonds |  |  | 195,542 |  |  |  | 14 |  |  |  | (242 | ) |  |  | 195,314 |
U.S. Government bonds |  |  | 73,809 |  |  |  | 4 |  |  |  | (6 | ) |  |  | 73,807 |
|  | $ | 275,115 |  |  | $ | 19 |  |  | $ | (250 | ) |  | $ | 274,884 |
December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Certificates of deposit |  | $ | 3,362 |  |  | $ | 3 |  |  | $ | — |  |  | $ | 3,365 |
Commercial paper |  |  | 2,998 |  |  |  | — |  |  |  | (2 | ) |  |  | 2,996 |
Corporate bonds |  |  | 209,595 |  |  |  | 6 |  |  |  | (377 | ) |  |  | 209,224 |
U.S. Government bonds |  |  | 32,996 |  |  |  | 1 |  |  |  | (3 | ) |  |  | 32,994 |
|  | $ | 248,951 |  |  | $ | 10 |  |  | $ | (382 | ) |  | $ | 248,579 |
At June 30, 2017, commercial paper of $4.0 million was included in cash equivalents in the consolidated balance sheet.

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- Definition The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4273-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 6.H.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13728-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 + Details
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