Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity

A summary of stock option activity as of and for the year ended December 31, 2019 is presented below:

	Non-vested stock					Stock options
	options outstanding					outstanding
				Weighted-					Weighted-		Weighted-
				average					average		average
	Number			grant-date		Number			exercise		contractual
	of shares			fair value		of shares			price		term (years)
Outstanding at December 31, 2018		263,783		$	9.04		862,025		$	22.56
Stock options granted		112,550			6.71		112,550			14.56
Stock options exercised		-			-		(5,325	)		10.10
Stock options vested		(103,697	)		8.05		-			-
Stock options forfeited		(19,900	)		8.60		(72,450	)		17.99
Outstanding at December 31, 2019		252,736		$	8.45		896,800		$	22.01		5.8
Exercisable at December 31, 2019							644,064		$	23.75		4.5

Schedule of Assumptions Used to Determine Fair Value of Stock Options Granted

The assumptions used to determine the fair value of stock options granted are detailed in the table below:

	2019			2018			2017
Risk-free interest rate	1.41% to 2.56%			2.63% to 3.10%			1.92% to 2.29%
Dividend yield		0.0	%		0.0	%		0.0	%
Expected market price volatility	47% to 52%			45% to 52%			45% to 53%
Weighted-average expected market price volatility		49.4	%		49.1	%		47.4	%
Expected term	4.6 to 6.5 years			4.7 to 6.8 years			5.6 to 7.5 years

Summary of Restricted Stock Activity

A summary of restricted stock activity for the years ended December 31, 2019 and 2018 is presented below:

					Weighted-
					average
	Number				grant-date
	of shares				fair value
Balance, December 31, 2017		82,280		$		15.45
Restricted stock granted in February		9,530				26.23
Restricted stock granted in May		5,136				24.20
Restricted stock vested in May		(2,260	)			18.00
Restricted stock granted in November		10,666				19.46
Restricted stock vested in December		(25,000	)			14.75
Balance, December 31, 2018		80,352				17.97
Restricted stock granted in May		6,368				12.88
Restricted stock vested in May		(4,528	)			20.56
Restricted stock granted in November		18,000				14.39
Balance, December 31, 2019		100,192		$		16.89