Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2016

Accounting Policies [Abstract]

Schedule of assets and liabilities that are measured at fair value on a recurring basis

September 30, 2016 (in thousands)	Level 1		Level 2		Level 3
Assets:
Investments:
Corporate Debt Securities – Held by Captive Insurance Company			$	4,408
Government-Backed and Government-Sponsored  Enterprises’ Debt Securities – Held by Captive Insurance Company				3,506
Other Assets:
Money Market and Mutual Funds – Nonqualified Retirement Savings Plan	$	764
Total Assets	$	764	$	7,914
Liabilities:
Other Accrued Liabilities:
Derivative Liabilities – Forward Gasoline Purchase Contracts			$	49
Total Liabilities			$	49

December 31, 2015 (in thousands)	Level 1		Level 2		Level 3
Assets:
Current Assets – Other:
Money Market Escrow Accounts – AEV, Inc. and Foley Company Dispositions	$	2,000
Investments:
Government-Backed and Government-Sponsored  Enterprises’ Debt Securities – Held by Captive Insurance Company			$	4,235
Corporate Debt Securities – Held by Captive Insurance Company				3,858
Other Assets:
Money Market and Mutual Funds – Nonqualified Retirement Savings Plan		196
Total Assets	$	2,196	$	8,093
Liabilities:
Other Accrued Liabilities:
Derivative Liabilities – Forward Gasoline Purchase Contracts			$	199
Total Liabilities			$	199

Schedule of inventories

	September 30,		December 31,
(in thousands)	2016		2015
Finished Goods	$	21,888	$	25,971
Work in Process		13,774		12,821
Raw Material, Fuel and Supplies		45,186		46,624
Total Inventories	$	80,848	$	85,416

Schedule of changes to goodwill by business segment

(in thousands)	Gross Balance December 31, 2015		Accumulated Impairments		Balance (net of impairments) December 31, 2015		Adjustments to Goodwill in 2016			Balance (net of impairments) September 30, 2016
Manufacturing	$	20,430	$	—	$	20,430	$	(2,160	)	$	18,270
Plastics		19,302		—		19,302		—			19,302
Total	$	39,732	$	—	$	39,732	$	(2,160	)	$	37,572

Schedule of components of intangible assets

September 30, 2016 (in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Remaining Amortization Periods
Amortizable Intangible Assets:
Customer Relationships	$	22,491	$	7,577	$	14,914	39-227 months
Covenant not to Compete		590		213		377	23 months
Total	$	23,081	$	7,790	$	15,291
December 31, 2015 (in thousands)
Amortizable Intangible Assets:
Customer Relationships	$	21,681	$	6,714	$	14,967	48-236 months
Covenant not to Compete		620		69		551	32 months
Other Intangible Assets		639		543		96	9 months
Emission Allowances		59		NA		59	Expensed as used
Total	$	22,999	$	7,326	$	15,673

Schedule of amortization expense for intangible assets

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(in thousands)	2016		2015		2016		2015
Amortization Expense – Intangible Assets	$	348	$	282	$	1,103	$	770

Schedule of estimated annual amortization expense for intangible assets

(in thousands)	2016		2017		2018		2019		2020
Estimated Amortization Expense – Intangible Assets	$	1,436	$	1,330	$	1,264	$	1,133	$	1,099

Schedule of supplemental disclosure of cash flow information

	As of September 30,
(in thousands)	2016		2015
Noncash Investing Activities:
Transactions Related to Capital Additions not Settled in Cash	$	11,552	$	21,760

Schedule of effects of applying the guidance and reclassification of unamortized line of credit issuance costs

(in thousands)	Previously Stated		Adjustments			Restated
Other Assets	$	31,108	$	1,676		$	32,784
Unamortized Debt Expense		3,897		(3,897	)		—
Total Assets		1,820,904		(2,221	)		1,818,683
Current Liabilities
Current Maturities of Long-Term Debt		52,544		(122	)		52,422
Total Current Liabilities		271,238		(122	)		271,116
Capitalization
Long-Term Debt—Net		445,945		(2,099	)		443,846
Total Capitalization		1,050,968		(2,099	)		1,048,869
Total Liabilities and Equity		1,820,904		(2,221	)		1,818,683