STOCK PLANS (Tables)

6 Months Ended

Jul. 01, 2018

STOCK PLANS

Summary of the restricted stock units ("RSUs") activity

		Weighted
		Average Grant
		Date Fair
	RSUs	Value
Nonvested — December 31, 2017	245,794	$	11.55
Granted	218,580	$	9.10
Vested	(99,244)	$	13.31
Forfeited	(2,490)	$	11.41
Nonvested — July 1, 2018	362,640	$	9.59

Summary of the stock appreciation rights ("SARs") activity

The following table summarizes the stock appreciation rights (“SARs”) activity during the six months ended July 1, 2018: 

		Weighted		Aggregate
		Average		Intrinsic Value
	SARs	Exercise Price		(in thousands)
Outstanding December 31, 2017	156,175	$	32.12	$	—
Expired	(24,825)	$	38.60
Outstanding July 1, 2018	131,350	$	30.89	$	—

Summary of stock-based compensation expense

	Quarters Ended				Six Months Ended
	July 1,		June 25,		July 1,		June 25,
(in thousands)	2018		2017		2018		2017
Stock-based compensation expense	$	320	$	432	$	1,061	$	1,461