Goodwill and Intangible Assets Mortgage Servicing Rights (Details) - USD ($) |
3 Months Ended | 12 Months Ended | |||
---|---|---|---|---|---|
May 01, 2018 |
Mar. 31, 2019 |
Mar. 31, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
Finite-Lived Intangible Assets [Line Items] | |||||
Amortization of Intangible Assets | $ (1,356,000) | $ (505,000) | |||
Mortgage Servicing Rights [Member] | |||||
Finite-Lived Intangible Assets [Line Items] | |||||
Finite-lived Intangible Assets Acquired | 0 | 0 | $ 1,558,000 | ||
Capitalization Of Mortgage Servicing Rights | 0 | 0 | 7,000 | ||
Amortization of Intangible Assets | (58,000) | (39,000) | (308,000) | ||
Finite-Lived Intangible Assets, Net | $ 2,043,000 | $ 805,000 | $ 2,101,000 | $ 844,000 | |
First BancTrust [Member] | Mortgage Servicing Rights [Member] | |||||
Finite-Lived Intangible Assets [Line Items] | |||||
Finite-lived Intangible Assets Acquired | $ 1,558,000 |