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Income Taxes Schedule of Components of Income Tax Expense (Benefit) (Details) - 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
Current Income Tax Expense (Benefit) [Abstract]                      
Current federal tax expense                 $ 729 $ 131 $ 2,839
Current state tax expense                 1,054 448 425
Current tax expense                 1,783 579 3,264
Deferred Income Tax Expense (Benefit) [Abstract]                      
Deferred federal tax expense (benefit)                 (367) 1,657 (1,000)
Deferred state tax expense (benefit)                 (65) 90 (108)
Deferred Income Tax Expense (Benefit)                 (432) 1,747 (1,108)
Total income tax expense $ 1,528 $ (1,464) $ (578) $ (837) $ 486 $ (936) $ (454) $ (1,422) $ 1,351 $ 2,326 $ 2,156