Parent Company Financial Information - Consolidated Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiary	$ 321	$ 319	$ 334
Income tax benefit	5,646	10,826	7,007
Net Income	22,579	15,249	16,301
Parent Company
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiary	11,000	6,000	16,000
Other income	456	588	117
Expenses	2,396	1,862	1,662
Income tax benefit	(407)	(581)	(526)
Income before equity in undistributed earnings of subsidiary	9,467	5,307	14,981
Equity in undistributed earnings of subsidiary	13,112	9,942	1,320
Net Income	$ 22,579	$ 15,249	$ 16,301