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The following is a reconciliation of activity for assets and liabilities measured at fair value based on Significant Other Unobservable Inputs (Level 3): (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Beginning balance at January 1, 2018	$ 10,023	$ 1,761
Realized gain included in earnings	64	186
Unrealized gain included in other comprehensive income	12
Purchases of available-for-sale securities	3,030	8,076
Principal redemption	(3,004)
Ending balance at December 31, 2018	10,125	10,023
Beginning balance at January 1, 2018	269	10
Realized loss included in earnings	(266)	259
Ending balance at December 31, 2018	3	269
Principal redemption
Mortgage Banking Derivatives Member
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Beginning balance at January 1, 2018	229	43
Realized gain included in earnings	84	186
Unrealized gain included in other comprehensive income
Purchases of available-for-sale securities
Principal redemption
Ending balance at December 31, 2018	313	229
Beginning balance at January 1, 2018	269	10
Realized loss included in earnings	(266)	259
Ending balance at December 31, 2018	3	269
Principal redemption
Investment Securities [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Beginning balance at January 1, 2018	9,794	1,718
Realized gain included in earnings	(20)
Unrealized gain included in other comprehensive income	12
Purchases of available-for-sale securities	3,030	8,076
Principal redemption	(3,004)
Ending balance at December 31, 2018	9,812	9,794
Beginning balance at January 1, 2018
Realized loss included in earnings
Ending balance at December 31, 2018
Principal redemption

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Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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