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EMPLOYEE BENEFIT PLANS- Net periodic benefit cost (credit) and related components (Details) - Multiple employer pension plan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Multiemployer Plans [Line Items]
Interest cost	$ 62	$ 66	$ 125	$ 132
Expected return on plan assets	(125)	(103)	(250)	(207)
Amortization of net losses	21	23	41	46
Net periodic benefit	$ (42)	$ (14)	$ (84)	$ (29)

X

- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

+ References

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- Definition

Amount of cost recognized for passage of time related to defined benefit plan.

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- Definition

Amount of net periodic benefit cost (credit) for defined benefit plan.

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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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No definition available.

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