v3.6.0.2

Fair Value | 12 Months Ended
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Dec. 31, 2016
Fair Value Disclosures [Abstract] |
Fair Value |
(3) | FAIR VALUE
Accounting guidance defines fair value as the price that would be received to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. This guidance establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. The hierarchy for inputs is categorized into three levels based on the reliability of inputs as follows: Level 1: Quoted market prices in active markets for identical assets or liabilities. Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data. Level 3: Unobservable inputs that are not corroborated by market data. The following tables summarize the valuation of our investments and financial instruments by the above pricing levels as of the valuation dates listed:
|  |  |  |  | December 31, 2016 |
|  | Total |  |  | (Level 1) |  |  | (Level 2) |
|  |  |  |  | (Thousands of dollars) |
Investments: |  |  |  |  |  |  |  |  |  |  |  |
Money market mutual funds |  | $ | 18,118 |  |  | $ | 18,118 |  |  | $ | — |
Commercial paper |  |  | 27,867 |  |  |  | — |  |  |  | 27,867 |
U.S. government agencies |  |  | 13,263 |  |  |  | — |  |  |  | 13,263 |
Corporate bonds and notes |  |  | 243,582 |  |  |  | — |  |  |  | 243,582 |
|  |  | 302,830 |  |  |  | 18,118 |  |  |  | 284,712 |
Deferred compensation plan assets |  |  | 2,394 |  |  |  | 2,394 |  |  |  | — |
Total |  | $ | 305,224 |  |  | $ | 20,512 |  |  | $ | 284,712 |
|  |  |  |  | December 31, 2015 |
|  | Total |  |  | (Level 1) |  |  | (Level 2) |
|  |  |  |  | (Thousands of dollars) |
Investments: |  |  |  |  |  |  |  |  |  |  |  |
Money market mutual funds |  | $ | 18,181 |  |  | $ | 18,181 |  |  | $ | — |
Commercial paper |  |  | 5,981 |  |  |  | — |  |  |  | 5,981 |
U.S. government agencies |  |  | 11,469 |  |  |  | — |  |  |  | 11,469 |
Corporate bonds and notes |  |  | 264,228 |  |  |  | — |  |  |  | 264,228 |
|  |  | 299,859 |  |  |  | 18,181 |  |  |  | 281,678 |
Deferred compensation plan assets |  |  | 2,294 |  |  |  | 2,294 |  |  |  | — |
Total |  | $ | 302,153 |  |  | $ | 20,475 |  |  | $ | 281,678 |
The Company holds its short-term investments in an investment fund consisting of high quality money market instruments of governmental and private issuers, which is classified as a short-term investment. Level 1 inputs are quoted prices (unadjusted) for identical assets or liabilities in active markets. These items are traded with sufficient frequency and volume to provide pricing on an ongoing basis. The fair values of the shares of these funds are based on observable market prices, and therefore, have been categorized in Level 1 in the fair value hierarchy. Level 2 inputs reflect quoted prices for identical assets or liabilities that are not active. These items may not be traded daily; examples include corporate bonds and U.S. government agencies. Assets are valued based on prices derived by independent third parties that use inputs such as benchmark yields, reported trades, broker/dealer quotes, and issuer spreads. Management reviews these prices and reserves the right to override them if, based on additional information, management believes such changes would be more reflective of fair value. Investments included in other assets, which relate to the liability for the Officers’ Deferred Compensation Plan, consist mainly of multiple investment funds that are highly liquid and diversified. Cash, accounts receivable, accounts payable and accrued liabilities all had fair values approximating their carrying amounts at December 31, 2016 and 2015. In connection with its impairment testing (discussed further in Note 1), the Company estimates cash flows and asset appraisals based upon historical data adjusted for the Company’s best estimate of expected future market performance. If an asset group fails the undiscounted cash flow test or appraisal value, the Company compares the market value to the book value of each asset group in order to determine if impairment exists (considered Level 3, as defined by ASC 820, Fair Value Measurements and Disclosures). If impairment exists, the book value of the asset group is reduced to its estimated fair value. The below table summarizes the combined fair value of the assets that incurred impairments during the years ended December 31, 2016, 2015 and 2014, along with the amount of the impairment. The impairment charges were recorded in Impairment of assets. See Note 1 for additional information.
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
|  | (Thousands of dollars) |
Amount of impairment incurred |  | $ | 407 |  |  | $ | — |  |  | $ | 10,508 |
Combined fair value of assets incurring impairment, after impairment charges |  | $ | 1,380 |  |  | $ | — |  |  | $ | 6,000 |

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- 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
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