Income Taxes (Details) - Schedule of Effective Income Tax Rate Reconciliation - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income before income tax expense	$ 22,310	$ 22,004	$ 22,125	$ 4,695	$ 23,266	$ 18,684	$ 9,770	$ 16,794	$ 71,134	$ 68,514	$ 42,858
Federal statutory rate									21.00%	35.00%	35.00%
Computed "expected" Federal income tax expense									$ 14,938	$ 23,980	$ 15,000
State tax, net of Federal tax benefit									1,104	213	(701)
Impact of the "Act"									(790)	5,623
Impact of "the Bill"									(618)
Bank owned life insurance									(650)	(1,113)	(896)
Tax-exempt interest and dividends									(1,521)	(2,123)	(1,714)
Tax benefits from stock based compensation									1,100	(348)
Other, net									(581)	(938)	87
Income tax expense	$ 3,638	$ 2,102	$ 4,598	$ 444	$ 12,686	$ 5,607	$ 2,087	$ 4,914	$ 10,782	$ 25,294	$ 11,776