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Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic Net Income per Common Share Available to Common Stockholders [Abstract]
Net income	$ 10,981,000	$ 10,037,000	$ 24,297,000	$ 18,427,000
Weighted average common shares outstanding	16,683,194	13,956,674	16,674,646	13,317,395
Basic earnings per common share	$ 0.66	$ 0.72	$ 1.46	$ 1.38
Diluted Net Income per Common Share Available to Common Stockholders [Abstract]
Net income applicable to diluted earnings per share	$ 10,981,000	$ 10,037,000	$ 24,297,000	$ 18,427,000
Weighted average common shares outstanding	16,683,194	13,956,674	16,674,646	13,317,395
Dilutive potential common shares [Abstract]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	0	4,124	0	4,053
Restricted stock awarded	34,780	13,250	34,780	13,250
Dilutive potential common shares	34,780	17,374	34,780	17,303
Diluted weighted average common shares outstanding	16,717,974	13,974,048	16,709,426	13,334,698
Diluted net income per common share available to common stockholders	$ 0.66	$ 0.72	$ 1.45	$ 1.38

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