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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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The aggregate value of all bailment pool chasis inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

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Represents the amount owed by distributors for purchases financed through a third party financing company.

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Represents the amount of purchases of distributors financed through a third party financing company.

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Represents the amount of repossessed inventory that was required to be repurchased by the entity for sales financed through a third party financing company.

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The maturity period of highly liquid investments.

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Number of company's upfit and distribution centres subject to lease agreement.

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Amount of inventory, truck chassis floor plan expected to be sold, or consumed within one year or operating cycle, if longer.

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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Fixed interest rate related to the interest rate derivative.

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Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Summary of Significant Accounting Policies - Derivatives (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) company	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Financing program
Purchases of distributors financed	$ 7,578	$ 7,584	$ 5,646
Amount owed by distributors to third party financing company	6,767	2,788
Repossessed inventory required to be repurchased	0	$ 13	$ 0
Inventories
Truck Floor Plan Inventories, Net	3,939
Inventories - bailment pool chasis	$ 22,420
Leases
Number of companies \| company	12
Maximum
Cash and Cash Equivalents
Maturity period	3 months
Interest rate swap
Interest Rate Swap
Derivative, Fixed Interest Rate		6.335%
Derivative Liability	$ (1,195)	$ (937)
Interest rate swap \| London Interbank Offered Rate (LIBOR)
Interest Rate Swap
Derivative, Basis Spread on Variable Rate		4.25%
Derivative, Floor Interest Rate		1.50%
Interest Rate Swap Effective 29 March 2018 through 31 March 2020
Interest Rate Swap
Derivative, Fixed Interest Rate	6.105%
Notional amount	$ 45
Interest Rate Swap Effective 29 March 2018 through 31 March 2020 \| London Interbank Offered Rate (LIBOR)
Interest Rate Swap
Derivative, Basis Spread on Variable Rate	4.25%
Derivative, Floor Interest Rate	1.00%
Interest Rate Swap Effective 31 December 2015 through 29 March 2018
Interest Rate Swap
Derivative, Fixed Interest Rate	6.916%
Notional amount	$ 90
Interest Rate Swap Effective 31 December 2015 through 29 March 2018 \| London Interbank Offered Rate (LIBOR)
Interest Rate Swap
Derivative, Basis Spread on Variable Rate	4.25%
Derivative, Floor Interest Rate	1.00%
Interest Rate Swap Effective 31 March 2020 through 30 June 2021
Interest Rate Swap
Derivative, Fixed Interest Rate	7.168%
Notional amount	$ 135
Interest Rate Swap Effective 31 March 2020 through 30 June 2021 \| London Interbank Offered Rate (LIBOR)
Interest Rate Swap
Derivative, Basis Spread on Variable Rate	4.25%
Derivative, Floor Interest Rate	1.00%