Accumulated Other Comprehensive Income (Loss) ("AOCIL"), Summary of Changes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Changes in AOCIL [Roll Forward]
Balance at beginning of period	$ 335,618	$ 344,726	$ 350,169	$ 338,994
Other comprehensive income (loss) before reclassifications	8,444	2,498	7,517	6,015
Amounts reclassified from AOCIL	206	(112)	65	(338)
Other comprehensive income	8,650	2,386	7,582	5,677
Balances at end of period	355,123	330,846	355,123	330,846
Accumulated Other Comprehensive Loss [Member]
Changes in AOCIL [Roll Forward]
Balance at beginning of period	(4,854)	(6,817)	(3,786)	(10,108)
Other comprehensive income	8,650	2,386	7,582	5,677
Balances at end of period	3,796	(4,431)	3,796	(4,431)
Unrealized Gains on Securities Available For Sale [Member]
Changes in AOCIL [Roll Forward]
Balance at beginning of period	2,933	(57)	3,739	(4,185)
Other comprehensive income (loss) before reclassifications	8,382	3,097	7,776	7,333
Amounts reclassified from AOCIL	0	0	(200)	(108)
Other comprehensive income	8,382	3,097	7,576	7,225
Balances at end of period	11,315	3,040	11,315	3,040
Disproportionate Tax Effects from Securities Available for Sale [Member]
Changes in AOCIL [Roll Forward]
Balance at beginning of period	(5,798)	(5,798)	(5,798)	(5,798)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from AOCIL	0	0	0	0
Other comprehensive income	0	0	0	0
Balances at end of period	(5,798)	(5,798)	(5,798)	(5,798)
Unrealized Losses on Cash Flow Hedges [Member]
Changes in AOCIL [Roll Forward]
Balance at beginning of period	(1,989)	(962)	(1,727)	(125)
Other comprehensive income (loss) before reclassifications	62	(599)	(259)	(1,318)
Amounts reclassified from AOCIL	206	(112)	265	(230)
Other comprehensive income	268	(711)	6	(1,548)
Balances at end of period	$ (1,721)	$ (1,673)	$ (1,721)	$ (1,673)