Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current
Federal	$ (1,632)	$ (50)	$ 846
State	1,330	172	150
Foreign	806	2,220	1,528
Total current	504	2,342	2,524
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	(847)	(2,764)	(438)
State	(354)	(122)	(49)
Foreign	596	(628)	221
Total deferred	(605)	(3,514)	(266)
Total tax provision (benefit)	(101)	(1,172)	2,258
Effective income tax rate reconciliation (table)
Income tax provision (benefit) computed at statutory federal income tax rates	(49,888)	3,429	6,939
Partnership earnings	49,888	3,429	6,939
Corporate subsidiary earnings (loss) subject to federal tax	(36,712)	(2,917)	405
Impact of goodwill impairments	3,341	0	0
Valuation allowances	33,682	0	0
Income tax expense attributable to foreign earnings	92	1,592	1,749
State income taxes (net of federal benefit)	(619)	97	89
Nondeductible expenses	79	56	15
Other	36	0	0
Total tax provision (benefit)	(101)	(1,172)	2,258
Income before income tax (table)
Domestic	(150,814)	2,578	9,883
International	4,083	7,508	9,942
Total	(146,731)	10,086	19,825
Deferred tax assets
Inventory reserve	1,016	0
Excess tax over book basis in long-lived assets	15,795	0
Accruals	680	1,132
Net operating losses	21,661	8,903
Bad debt reserve	443	374
Other	82	0
Total deferred tax assets	39,677	10,409
Valuation allowance	(36,325)	(2,217)
Net deferred tax assets	3,352	8,192
Deferred tax liabilities
Accruals	2,889	1,117
Excess book over tax basis in property, plant and equipment	0	7,416
All other	1,099	976
Total deferred tax liability	3,988	9,509
Net deferred tax lilability	636	1,317
Foreign net operating loss carryforwards / carrybacks	22,000
Increase in valuation allowance	$ 34,100	$ 2,000	$ 0