Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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Note 1 - Summary of Significant Interim Accounting Policies (Details Textual) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Mar. 01, 2018 USD ($)	Jan. 01, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jan. 03, 2017 USD ($)	Jul. 01, 2014 USD ($)
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest				99.00%
Amortization of Intangible Assets, Total	$ 1,000	$ 600		$ 2,900	$ 1,700
Advertising Expense	200	100		400	100
Selling, General and Administrative Expense, Total	25,482	17,386		$ 69,991	51,809
Derivative, Notional Amount										$ 14,300
Number of Reportable Segments				3
Revenue from Contract with Customer, Excluding Assessed Tax, Total	95,870	67,773		$ 251,349	194,365
Revenue, Remaining Performance Obligation, Amount	0			0
Contract with Customer, Asset, Net, Current, Total	49,605			49,605			$ 43,300
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total	2,925			3,715
Accounting Standards Update 2014-09 [Member]
Selling, General and Administrative Expense, Total				706
Revenue from Contract with Customer, Excluding Assessed Tax, Total				$ 42,880
Cumulative Tax Adjustments Payment, Period				4 years
Accounting Standards Update 2014-09 [Member] \| Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Selling, General and Administrative Expense, Total	(45)			$ (67)
Revenue from Contract with Customer, Excluding Assessed Tax, Total	2,925			3,715
Contract with Customer, Asset, Net, Current, Total	49,605			49,605
Accounting Standards Update 2014-09 [Member] \| Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption							$ 11,200
Interest Rate Swap [Member]
Derivative, Notional Amount	18,000			18,000		$ 18,000
Foreign Exchange Contract [Member]
Derivative, Notional Amount									$ 1,800
Foreign Exchange Contract [Member] \| Selling, General and Administrative Expenses [Member]
Gain (Loss) on Derivative Instruments, Net, Pretax, Total			$ 100
Shipping and Handling [Member]
Selling, General and Administrative Expense, Total	$ 4,000	$ 2,700		$ 10,000	$ 8,100