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Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

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-Section 50

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Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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-Publisher FASB

-Name Accounting Standards Codification

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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-Name Accounting Standards Codification

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The noncurrent portion of the carrying value as of the balance sheet date of a type of municipal bond typically used to fund a development project. Also called special assessment limited liability bond, special district bond, special purpose bond, special tax bond and community development obligation. Interest owed to lenders is paid by taxes levied on the community benefiting from the particular bond-funded project. For example, if a bond of this sort was issued to pay for sidewalks to be repaved in a certain community, an additional tax would be levied on homeowners in the area benefiting from this project.

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-Publisher FASB

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Name Regulation S-X (SX)

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FAIR VALUE MEASUREMENTS: Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2008	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2012
Level 3 reconciliation
Industrial revenue development bonds, carrying amount, approximates fair value	$ 7,500us-gaap_SpecialAssessmentBondNoncurrent		$ 7,500us-gaap_SpecialAssessmentBondNoncurrent	$ 7,500us-gaap_SpecialAssessmentBondNoncurrent
Cost Basis \| Level 2
Level 3 reconciliation
Industrial revenue development bonds, carrying amount, approximates fair value	7,500		7,500		7,500
Jefferson County Alabama Sewer Revenue Refunding Warrants \| Auction rate security \| Level 3
Fair value on a recurring basis
Other-than-temporary pre-tax impairment on investment		5,140
Net gain of investment	2,430
Jefferson County Alabama Sewer Revenue Refunding Warrants \| AAA rating \| Auction rate security
Fair value on a recurring basis
Sale value of investment			10,840
Jefferson County Alabama Sewer Revenue Refunding Warrants \| AAA rating \| Auction rate security \| Level 3
Fair value on a recurring basis
Purchase cost of investment		13,550
Carrying value of investment		8,410
Level 3 reconciliation
Balance at the end of the period		$ 8,410