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16. FAIR VALUE MEASUREMENTS | 12 Months Ended
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Dec. 31, 2015
Fair Value Disclosures [Abstract] |
FAIR VALUE MEASUREMENTS | The fair value hierarchy prioritizes the inputs used in valuation techniques into three levels, as follows:
| · | Level 1 – Observable inputs – unadjusted quoted prices in active markets for identical assets and liabilities;
| · | Level 2 – Observable inputs other than quoted prices included in Level 1 that are observable for the asset or liability through corroboration with market data; and
| · | Level 3 – Unobservable inputs – includes amounts derived from valuation models where one or more significant inputs are unobservable. For fair value measurements using significant unobservable inputs, a description of the inputs and the information used to develop the inputs is required along with a reconciliation of Level 3 values from the prior reporting period.
Pooled separate accounts – Pooled separate accounts invest primarily in domestic and international stocks, commercial paper or single mutual funds. The net asset value is used as a practical expedient to determine fair value for these accounts. Each pooled separate account provides for redemptions by the Retirement Plan at reported net asset values per share, with little to no advance notice requirement, therefore these funds are classified within Level 2 of the valuation hierarchy. Warrants – Except for the warrants issued September 26, 2012, the Company’s warrants were valued using a Monte Carlo Binomial Lattice-Based valuation methodology, adjusted for marketability restrictions. The warrants issued September 26, 2012, due to no anti-dilution protection features, were valued using the Black-Scholes Valuation Model. The Company recorded its warrants issued from 2011 through 2012 and the conversion features associated with its convertible notes at fair value and designated them as Level 3 on their issuance dates. Significant assumptions used and related fair values for the warrants as of December 31, 2015 were as follows:
Original Issuance |  |  | Exercise Price |  |  | Volatility |  |  | Risk Free Interest Rate |  |  | Term (years) |  |  | Market Discount |  |  | Warrants Outstanding |  |  | Fair Value |
| 07/3/2012 |  |  | $ | 6.09 |  |  |  | 49.1% |  |  |  | 0.86% |  |  |  | 1.51 |  |  |  | 22.9% |  |  |  | 211,000 |  |  |  | 200,000 |
| 12/13/2011 |  |  | $ | 8.43 |  |  |  | 48.4% |  |  |  | 0.65% |  |  |  | 0.95 |  |  |  | 18.3% |  |  |  | 138,000 |  |  |  | 73,000 |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 273,000 |
Significant assumptions used and related fair values for the warrants as of December 31, 2014 were as follows:
Original Issuance |  |  | Exercise Price |  |  | Volatility |  |  | Risk Free Interest Rate |  |  | Term (years) |  |  | Market Discount |  |  | Warrants Outstanding |  |  | Fair Value |
| 09/26/2012 |  |  | $ | 8.85 |  |  |  | 51.0% |  |  |  | 0.19% |  |  |  | 0.74 |  |  |  | 37.0% |  |  |  | 473,000 |  |  |  | 748,000 |
| 07/3/2012 |  |  | $ | 6.09 |  |  |  | 56.1% |  |  |  | 0.89% |  |  |  | 2.51 |  |  |  | 32.8% |  |  |  | 211,000 |  |  |  | 811,000 |
| 12/13/2011 |  |  | $ | 8.43 |  |  |  | 54.3% |  |  |  | 0.67% |  |  |  | 1.95 |  |  |  | 28.7% |  |  |  | 138,000 |  |  |  | 427,000 |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 1,986,000 |
The estimated fair value of the warrants is affected by the above underlying inputs. Observable inputs include the values of exercise price, stock price, term and risk-free interest rate. As separate inputs, an increase (decrease) in either the term or risk free interest rate will result in an increase (decrease) in the estimated fair value of the warrant. Unobservable inputs include volatility and market discount. An increase (decrease) in volatility will result in an increase (decrease) in the estimated warrant value and an increase (decrease) in the market discount will result in a decrease (increase) in the estimated warrant fair value. The volatility utilized was a blended average of the Company’s historical volatility and implied volatilities derived from a selected peer group. The implied volatility component has remained relatively constant over time given that implied volatility is a forward-looking assumption based on observable trades in public option markets. Should the Company’s historical volatility increase (decrease) on a go-forward basis, the resulting value of the warrants would increase (decrease). The market discount, or a discount for lack of marketability, is quantified using a Black-Scholes option pricing model, with a primary model input of assumed holding period restriction. As the assumed holding period increases (decreases), the market discount increases (decreases), conversely impacting the value of the warrant fair value. Convertible Notes – The conversion feature imbedded in the convertible notes was valued using a Monte Carlo Binomial Lattice-Based valuation methodology, adjusted for marketability restrictions. The Company estimated the fair value of the conversion feature until the retirement of the convertible notes in December 2013. Other Derivative Instruments – The Company’s other derivative instruments consist of commodity positions. The fair values of the commodity positions are based on quoted prices on the commodity exchanges and are designated as Level 1 inputs. The following table summarizes recurring fair value measurements by level at December 31, 2015 (in thousands):
|  |  | Fair Value |  |  |  | Level 1 |  |  |  | Level 2 |  |  |  | Level 3 |  |  |  | Benefit Plan Percentage Allocation |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative financial instruments(1) |  | $ | 2,081 |  |  | $ | 2,081 |  |  | $ | – |  |  | $ | – |  |  |  |  |
Defined benefit plan assets(2) (pooled separate accounts): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Large U.S. Equity (3) |  |  | 3,662 |  |  |  | – |  |  |  | 3,662 |  |  |  | – |  |  |  | 29% |
Small/Mid U.S. Equity(4) |  |  | 1,099 |  |  |  | – |  |  |  | 1,099 |  |  |  | – |  |  |  | 9% |
International Equity(5) |  |  | 1,525 |  |  |  | – |  |  |  | 1,525 |  |  |  | – |  |  |  | 12% |
Fixed Income(6) |  |  | 6,281 |  |  |  | – |  |  |  | 6,281 |  |  |  | – |  |  |  | 50% |
|  | $ | 14,648 |  |  | $ | 2,081 |  |  |  | 12,567 |  |  | $ | – |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants (7) |  | $ | (273 | ) |  | $ | – |  |  | $ | – |  |  | $ | (273 | ) |  |  |  |
Derivative financial instruments(8) |  |  | (1,848 | ) |  |  | (1,848 | ) |  |  | – |  |  |  | – |  |  |  |  |
|  | $ | (2,121 | ) |  | $ | (1,848 | ) |  | $ | – |  |  | $ | (273 | ) |  |  |  |
The following table summarizes recurring fair value measurements by level at December 31, 2014 (in thousands):
|  |  | Fair Value |  |  |  | Level 1 |  |  |  | Level 2 |  |  |  | Level 3 |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative financial instruments(1) |  | $ | 1,586 |  |  | $ | 1,586 |  |  | $ | – |  |  | $ | – |
|  | $ | 1,586 |  |  | $ | 1,586 |  |  | $ | – |  |  | $ | – |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants |  | $ | (1,986 | ) |  | $ | – |  |  | $ | – |  |  | $ | (1,986 | )
Derivative financial instruments |  |  | (1,149 | ) |  |  | (1,149 | ) |  |  | – |  |  |  | – |
|  | $ | (3,135 | ) |  | $ | (1,149 | ) |  | $ | – |  |  | $ | (1,986 | )
__________
| (1) | Included in other current assets in the consolidated balance sheets.
| (2) | See Note 10 for accounting discussion.
(3) This category includes investments in funds comprised of equity securities of large U.S. companies. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund.
| (4) | This category includes investments in funds comprised of equity securities of small- and medium-sized U.S. companies. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund.
| (5) | This category includes investments in funds comprised of equity securities of foreign companies including emerging markets. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund.
| (6) | This category includes investments in funds comprised of U.S. and foreign investment-grade fixed income securities, high-yield fixed income securities that are rated below investment-grade, U.S. treasury securities, mortgage-backed securities, and other asset-backed securities. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund.
| (7) | Included in warrant liabilities at fair value in the consolidated balance sheets.
| (8) | Included in accrued liabilities in the consolidated balance sheets.
For fair value measurements using significant unobservable inputs (Level 3), a description of the inputs and the information used to develop the inputs is required along with a reconciliation of Level 3 values from the prior reporting period. The changes in the Company’s fair value of its Level 3 inputs with respect to its warrants were as follows (in thousands):
|  | Warrants |  |  | Conversion Features |
Balance, December 31, 2012 |  | $ | 4,892 |  |  | $ | – |
Issuance of warrants in January offering |  | $ | 2,657 |  |  | $ | – |
Issuance of notes and warrants in March offering |  |  | 1,572 |  |  |  | 1,401 |
Issuance of notes in June offering |  |  | – |  |  |  | 2,929 |
Conversions of notes |  |  | – |  |  |  | (5,205 | )
Exercises of warrants |  |  | (260 | ) |  |  | – |
Adjustments to fair value for the period |  |  | (646 | ) |  |  | 875 |
Balance, December 31, 2013 |  | $ | 8,215 |  |  | $ | – |
Exercises of warrants |  |  | (41,486 | ) |  |  | – |
Expiration of warrants |  |  | (3 | ) |  |  | – |
Adjustments to fair value for the period |  |  | 35,260 |  |  |  | – |
Balance, December 31, 2014 |  | $ | 1,986 |  |  | $ | – |
Exercises of warrants |  |  | (72 | ) |  |  | – |
Expiration of warrants |  |  | (527 | ) |  |  | – |
Adjustments to fair value for the period |  |  | (1,114 | ) |  |  | – |
Balance, December 31, 2015 |  | $ | 273 |  |  | $ | – |

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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=36462937&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=49121117&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=49121117&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=49121117&loc=d3e13433-108611 + Details
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