Employee Retirement Plans - Defined Contribution and Nonqualified Plans (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined contribution plan
Company's matching contributions	$ 863	$ 377	$ 255
Non-discretionary employer contributions	901	1,264	$ 1,021
Non-qualified plan
Defined contribution plan
Expense	511	496
Amount accrued	3,471	2,482
Henderson Defined Contribution Plan
Defined contribution plan
Company's matching contributions		$ 299
Dejana Defined Contribution Plan
Defined contribution plan
Company's matching contributions	$ 119

Represents amount of non-discretionary contributions made by an employer to a defined contribution plan.

No definition available.

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- Definition

The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

+ References

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-Publisher FASB
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- References

No definition available.

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

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- Definition

This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans.

+ References

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