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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

Stock-Based Compensation [Abstract]

Schedule of stock-based compensation expense

		For the years ended December 31,
(dollars in thousands)			2018		2017		2016
Stock option expense		$	1,183		959		746
Restricted stock grant expense			319		299		286
Total stock-based compensation expense		$	1,502		1,258		1,032

Summary of the status of the stock option plan and changes

		For the years ended December 31,
								2018								2017								2016
								Weighted								Weighted								Weighted
					Weighted			Average					Weighted			Average					Weighted			Average
					average			Remaining					average			Remaining					average			Remaining
					exercise			Contractual					exercise			Contractual					exercise			Contractual
		Shares			price			Life		Shares			price			Life		Shares			price			Life
Outstanding at beginning of year		662,841			$	15.70				642,203			$	11.77				693,954			$	8.94
Granted		93,200				43.32				110,950				35.34				109,500				23.65
Exercised		(105,630	)			8.51				(74,437	)			9.48				(152,751	)			7.19
Forfeited or expired		(3,600	)			40.03				(15,875	)			23.49				(8,500	)			15.69
Outstanding at end of year		646,811			$	20.71		5.6 years		662,841			$	15.70		5.6 years		642,203			$	11.77		5.9 years
Options exercisable at year-end		404,851			$	12.58		4.0 years		419,766			$	9.20		4.1 years		399,256			$	7.62		4.4 years
Weighted average fair value of options granted during the year					$	16.83							$	14.14							$	10.96
Shares available for grant		270,090								359,690								454,765

Schedule of assumptions used

		2018		2017		2016
Dividend yield		-		-		-
Expected life		7 years		7 years		7 years
Expected volatility		32.08%		34.63%		43.22%
Risk-free interest rate		2.50%		2.04%		1.65%

Summary of the status of the Company's nonvested restricted stock and changes

		December 31,
		2018						2017						2016
					Weighted						Weighted						Weighted
					Average						Average						Average
		Restricted			Grant-Date			Restricted			Grant-Date			Restricted			Grant-Date
		Shares			Fair Value			Shares			Fair Value			Shares			Fair Value
Nonvested at beginning of year		25,000			$	26.43		36,125			$	20.13		33,749			$	12.92
Granted		13,000				42.87		6,500				35.14		22,000				23.91
Vested		(8,375	)			25.17		(17,625	)			16.73		(17,749	)			11.68
Forfeited		-				-		-				-		(1,875	)			14.72
Nonvested at end of year		29,625			$	34.00		25,000			$	26.43		36,125			$	20.13

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Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets.

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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