XML 19 R8.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Marketable Securities and Fair Value Measurements | 9 Months Ended
--- | ---
Sep. 30, 2017
Fair Value Disclosures [Abstract] |
Marketable Securities and Fair Value Measurements | Marketable Securities and Fair Value Measurements Marketable Securities Marketable securities, classified as available-for-sale, consisted of the following (in thousands):
|  | September 30, 2017 |  | December 31, 2016
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Certificates of deposit |  | $ | 15,990 |  |  | $ | 4 |  |  | $ | (1 | ) |  | $ | 15,993 |  |  | $ | 12,499 |  |  | $ | 9 |  |  | $ | — |  |  | $ | 12,508 |
Corporate securities |  | 40,941 |  |  | 12 |  |  | (13 | ) |  | 40,940 |  |  | 42,765 |  |  | 9 |  |  | (42 | ) |  | 42,732 |
U.S. Treasury and agency securities |  | 3,494 |  |  | — |  |  | (12 | ) |  | 3,482 |  |  | 5,190 |  |  | — |  |  | (14 | ) |  | 5,176 |
Commercial paper |  | 9,214 |  |  | 2 |  |  | — |  |  | 9,216 |  |  | 11,470 |  |  | 1 |  |  | (2 | ) |  | 11,469 |
Asset-backed securities |  | 14,352 |  |  | — |  |  | (10 | ) |  | 14,342 |  |  | 13,493 |  |  | — |  |  | (6 | ) |  | 13,487 |
|  | $ | 83,991 |  |  | $ | 18 |  |  | $ | (36 | ) |  | $ | 83,973 |  |  | $ | 85,417 |  |  | $ | 19 |  |  | $ | (64 | ) |  | $ | 85,372 |
During the nine months ended September 30, 2017 and 2016, we did not reclassify any amount to earnings from accumulated other comprehensive loss related to unrealized gains or losses. The following table summarizes the cost and estimated fair value of marketable securities based on stated effective maturities as of September 30, 2017 (in thousands):
| Amortized Cost |  | Fair Value
Less than 1 year | $ | 59,490 |  |  | $ | 59,480 |
Mature in 1 - 3 years | 24,501 |  |  | 24,493 |
| $ | 83,991 |  |  | $ | 83,973 |
All available-for-sale securities have been classified as current based on management's ability to use the funds in current operations. Marketable securities in an unrealized loss position consisted of the following (in thousands):
| Less Than 12 Months |  | 12 Months or More |  | Total
As of September 30, 2017 | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
Certificates of deposit | $ | 5,500 |  |  | $ | (1 | ) |  | $ | — |  |  | $ | — |  |  | $ | 5,500 |  |  | $ | (1 | )
Corporate securities | 27,254 |  |  | (10 | ) |  | 1,500 |  |  | (3 | ) |  | 28,754 |  |  | (13 | )
U.S. Treasury and agency securities | 3,482 |  |  | (12 | ) |  | — |  |  | — |  |  | 3,482 |  |  | (12 | )
Asset-backed securities | 14,342 |  |  | (10 | ) |  | — |  |  | — |  |  | 14,342 |  |  | (10 | )
| $ | 50,578 |  |  | $ | (33 | ) |  | $ | 1,500 |  |  | $ | (3 | ) |  | $ | 52,078 |  |  | $ | (36 | )
| Less Than 12 Months |  | 12 Months or More |  | Total
As of December 31, 2016 | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
Corporate securities | $ | 28,537 |  |  | $ | (42 | ) |  | $ | — |  |  | $ | — |  |  | $ | 28,537 |  |  | $ | (42 | )
U.S. Treasury and agency securities | 5,176 |  |  | (14 | ) |  | — |  |  | — |  |  | 5,176 |  |  | (14 | )
Commercial paper | 8,974 |  |  | (2 | ) |  | — |  |  | — |  |  | 8,974 |  |  | (2 | )
Asset-backed securities | 10,664 |  |  | (6 | ) |  | — |  |  | — |  |  | 10,664 |  |  | (6 | )
| $ | 53,351 |  |  | $ | (64 | ) |  | $ | — |  |  | $ | — |  |  | $ | 53,351 |  |  | $ | (64 | )
Based on evaluation of securities that have been in a continuous loss position, we did not recognize any other-than-temporary impairment charges during the nine months ended September 30, 2017 and 2016. Fair Value Measurements The following is a summary of our cash, cash equivalents and marketable securities measured at fair value on a recurring basis (in thousands):
|  | September 30, 2017 |  | December 31, 2016
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Cash |  | $ | 27,346 |  |  | $ | — |  |  | $ | — |  |  | $ | 27,346 |  |  | $ | 18,672 |  |  | $ | — |  |  | $ | — |  |  | $ | 18,672 |
Cash equivalents |  | 12,573 |  |  | — |  |  | — |  |  | 12,573 |  |  | 10,303 |  |  | — |  |  | — |  |  | 10,303 |
Certificates of deposit |  | — |  |  | 15,993 |  |  | — |  |  | 15,993 |  |  | — |  |  | 12,508 |  |  | — |  |  | 12,508 |
Corporate securities |  | — |  |  | 40,940 |  |  | — |  |  | 40,940 |  |  | — |  |  | 42,732 |  |  | — |  |  | 42,732 |
U.S. Treasury and agency securities |  | — |  |  | 3,482 |  |  | — |  |  | 3,482 |  |  | — |  |  | 5,176 |  |  | — |  |  | 5,176 |
Commercial paper |  | — |  |  | 9,216 |  |  | — |  |  | 9,216 |  |  | — |  |  | 11,469 |  |  | — |  |  | 11,469 |
Asset-backed securities |  | — |  |  | 14,342 |  |  | — |  |  | 14,342 |  |  | — |  |  | 13,487 |  |  | — |  |  | 13,487 |
|  | $ | 39,919 |  |  | $ | 83,973 |  |  | $ | — |  |  | $ | 123,892 |  |  | $ | 28,975 |  |  | $ | 85,372 |  |  | $ | — |  |  | $ | 114,347 |
There were no transfers between Level 1 and Level 2 fair value measurement categories during the nine months ended September 30, 2017 and 2016.

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

X
- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13504-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 + Details
Name: | us-gaap_FairValueDisclosuresTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration