Nature of Operations and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Property, Plant and Equipment

Depreciation and amortization are computed using the straight line method over the following estimated useful lives:

Buildings and improvements	20 – 40 years
Transportation equipment	5 – 6 years
Machinery and equipment	10 – 12 years

Property and equipment consist of the following:

	December 31,
	2016			2015
Land, buildings and improvements	$	67,487		$	56,143
Transportation equipment	3,253			5,417
Machinery and equipment	164,871			152,742
Construction in progress	10,608			15,612
Property and equipment, at cost	246,219			229,914
Less accumulated depreciation and amortization	(153,428		)	(146,360		)
Property and equipment, net	$	92,791		$	83,554

Interest Cost

Total interest incurred for 2016, 2015, and 2014 is noted below:

	Year Ended December 31,
	2016		2015		2014
Interest costs charged to expense	$	1,294	$	534	$	816
Plus: Interest cost capitalized	198		297		107
Total	$	1,492	$	831	$	923