Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2018

Summary of Workers' Compensation Known Claims and IBNR Reserves

Workers’ compensation known claims and IBNR reserves included on the Consolidated Balance Sheets were as follows (in thousands):


	As of December 31,
	2018		2017
Included in other current liabilities	$	5,795	$	5,899
Included in other long-term liabilities		9,447		8,721

	$	15,242	$	14,620

Schedule of Insurance Receivable for Claims

This receivable offsets an equal liability included within the reserve amounts noted above and was as follows (in thousands):


	As of December 31,
	2018		2017
Included in other non-current assets	$	1,888	$	1,826

Summary of Equity-based Awards for Employees

Amounts for each category of equity-based award for employees as of December 31, 2018 and changes during the year ended December 31, 2018 were as follows:


	Common Stock Awards					Performance-Based Stock Awards					Performance-Based Stock Units
	Awards			Weighted Average Fair Market Value Per Share		Awards			Weighted Average Fair Market Value Per Share		Units			Weighted Average Fair Market Value Per Share
Nonvested awards/units at December 31, 2017		202,331		$	39.09		77,254		$	41.00		72,000		$	52.16
Granted		65,112			57.51		52,892			65.60		14,072			55.92
Vested		(91,291	)		36.14		—			—		(71,120	)		52.15
Forfeited/Cancelled		(2,963	)		49.65		(14,448	)		41.00		(1,704	)		53.38

Nonvested awards/units at December 31, 2018		173,189		$	47.40		115,698		$	52.25		13,248		$	56.05

Summary of Stock Compensation Expenses

During the years ended December 31, 2018, 2017 and 2016, we recorded the following stock compensation expense, by income statement category (in thousands):


	2018		2017		2016
Cost of sales	$	846	$	965	$	—
Selling		451		571		—
Administrative		6,549		5,055		1,894

	$	7,846	$	6,591	$	1,894