Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2021

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

Schedule of Changes in Restricted Stock Units

The following table summarizes information about the changes in restricted stock units for the nine-months ended September 30, 2021.

	For the nine-months ended September 30,
	2021
	Restricted Stock Units Outstanding		Weighted Average Grant Date Fair Value
Balance at beginning of period		—	$	—
Grants		22,597		48.91
Vesting		—		—
Forfeited/expired		—		—
Balance at end of period		22,597	$	48.91

Schedule of Changes in Performance Stock Units

The following table summarizes information about the changes in performance stock units as of and for the nine-months ended September 30, 2021. There was no performance stock unit activity during the nine-months ended September 30, 2020.

	For the nine-months ended September 30,
	2021
	Performance-Based Restricted Stock Units Outstanding		Weighted Average Grant Date Fair Value
Balance at beginning of period		—	$	—
Grants		22,597		48.91
Vesting		—		—
Forfeited/expired		—		—
Balance at end of period		22,597	$	48.91

Schedule of Analysis of Stock Option Activity

An analysis of stock option activity for the nine-months ended September 30, 2021 is presented in the table and narrative below:​​​​​​​

	Shares			Weighted- Average Ex. Price
Outstanding, December 31, 2020		1,833,057		$	20.85
Granted		212,588			48.91
Exercised		(273,646	)		17.12
Cancelled		(27,240	)		25.73
Outstanding, September 30, 2021		1,744,759			24.78
Exercisable, September 30, 2021		830,161		$	19.04

Summary of Vested and Unvested Restricted Stock Outstanding

The following table summarizes information about vested and unvested restricted stock.

	For the nine-months ended September 30,
	2021					2020
	Restricted Stock Outstanding			Weighted Average Grant Date Fair Value		Restricted Stock Outstanding			Weighted Average Grant Date Fair Value
Balance at beginning of period		95,888		$	29.89		105,309		$	29.93
Grants		12,110			49.58		32,149			28.55
Vesting		(31,081	)		28.42		(36,880	)		30.20
Forfeited/expired		(1,389	)		32.76		(239	)		29.70
Balance at end of period		75,528		$	33.60		100,339		$	29.39