Accumulated Other Comprehensive Loss ("AOCL"), Summary of Changes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Changes in AOCL [Roll Forward]
Balance at beginning of period	$ 344,726	$ 267,917	$ 338,994	$ 264,933
Other comprehensive income (loss) before reclassifications	2,498	(691)	6,015	(3,204)
Amounts reclassified from AOCL	(112)	(21)	(338)	(11)
Other comprehensive income (loss)	2,386	(712)	5,677	(3,215)
Balances at end of period	330,846	337,083	330,846	337,083
Accumulated Other Comprehensive Loss [Member]
Changes in AOCL [Roll Forward]
Balance at beginning of period	(6,817)	(8,502)	(10,108)	(5,999)
Other comprehensive income (loss)	2,386	(712)	5,677	(3,215)
Balances at end of period	(4,431)	(9,214)	(4,431)	(9,214)
Unrealized Gains (Losses) on Securities Available For Sale [Member]
Changes in AOCL [Roll Forward]
Balance at beginning of period	(57)	(3,509)	(4,185)	(470)
Other comprehensive income (loss) before reclassifications	3,097	(949)	7,333	(4,003)
Amounts reclassified from AOCL	0	21	(108)	36
Other comprehensive income (loss)	3,097	(928)	7,225	(3,967)
Balances at end of period	3,040	(4,437)	3,040	(4,437)
Disproportionate Tax Effects from Securities Available for Sale [Member]
Changes in AOCL [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 AOCL	0	0	0	0
Other comprehensive income (loss)	0	0	0	0
Balances at end of period	(5,798)	(5,798)	(5,798)	(5,798)
Unrealized Gains (Losses) on Cash Flow Hedges [Member]
Changes in AOCL [Roll Forward]
Balance at beginning of period	(962)	805	(125)	269
Other comprehensive income (loss) before reclassifications	(599)	258	(1,318)	799
Amounts reclassified from AOCL	(112)	(42)	(230)	(47)
Other comprehensive income (loss)	(711)	216	(1,548)	752
Balances at end of period	$ (1,673)	$ 1,021	$ (1,673)	$ 1,021

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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