Significant Stock-Based Plan Activity and Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Information Regarding Stock-Based Compensation Expense

Stock-Based Compensation

Certain information regarding our stock-based compensation was as follows (in thousands, except per share amounts):

	Year Ended December 31,
	2015		2014		2013
Weighted average per share fair value of stock options granted	$	7.68	$	6.89	$	4.90
Intrinsic value of stock options exercised	92		932		554
Intrinsic value of fully-vested stock awards granted	42		288		1,039

Stock-Based Compensation Expense

Stock-based compensation expense was recognized in our Consolidated Statements of Operations as follows (in thousands):

	Year Ended December 31,
	2015		2014		2013
Selling, general and administrative expense	$	1,074	$	666	$	464
Cost of sales	83		118		85
Total stock-based compensation expense	$	1,157	$	784	$	549

Weighted Average Assumptions Utilized in Determining Fair Value

The following weighted average assumptions were utilized in determining fair value pursuant to the Black-Scholes option pricing model:

	Year Ended December 31,
	2015		2014		2013
Risk-free interest rate	1.87	%	2.11	%	1.61	%
Dividend yield	—	%	—	%	—	%
Expected life	6.72 years		7.34 years		7.85 years
Volatility	61.50	%	60.20	%	58.91	%

Stock Option Activity

Stock Option Activity

Stock option activity for the year ended December 31, 2015 was as follows:

	Options Outstanding		Weighted Average Exercise Price
Outstanding at December 31, 2014	305,031		$	9.35
Granted	136,135		12.78
Exercised	(23,319	)	6.38
Cancelled	(47,207	)	10.23
Outstanding at December 31, 2015	370,640		10.68

Information Regarding Options Outstanding

Certain information regarding options outstanding as of December 31, 2015 was as follows:

	Options Outstanding		Options Exercisable
Number	370,640		86,826
Weighted average exercise price	$	10.68	$	8.94
Aggregate intrinsic value	$	87,000	$	42,000
Weighted average remaining contractual term	8.2 years		7.2 years

Performance-based Stock Award Activity

Activity related to performance-based awards was as follows (in shares):

	2015  Awards	2014  Awards	2013 Awards		2012  Awards		Total
Granted (target amount)	67,200	64,882	33,348		42,450		207,880
Vested	—	—	—		(19,509	)	(19,509	)
Canceled due to termination of employee	—	—	(2,779	)	—		(2,779	)
Canceled due to failure to meet performance goals	—	—	—		(22,941	)	(22,941	)
Not expected to vest due to failure to meet performance goals	—	—	(18,869	)	—		(18,869	)
Expected to vest as of December 31, 2015	67,200	64,882	11,700		—		143,782