Fair Value Measurements Balance Sheet Location of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Other Assets [Member]
Financial Insturments, Fair Value [Line Items]
Financial Instrument, Fair Value	$ 964	$ 989
Other Liabilities [Member]
Financial Insturments, Fair Value [Line Items]
Fair Value Disclosure, Recurring	1,528	3,459
Forward Sales of Mortgage Backed Securities [Member] | Other Assets [Member]
Financial Insturments, Fair Value [Line Items]
Financial Instrument, Fair Value	0	0
Forward Sales of Mortgage Backed Securities [Member] | Other Liabilities [Member]
Financial Insturments, Fair Value [Line Items]
Fair Value Disclosure, Recurring	1,371	3,305
Interest Rate Lock Commitments [Member] | Other Assets [Member]
Financial Insturments, Fair Value [Line Items]
Financial Instrument, Fair Value	964	989
Interest Rate Lock Commitments [Member] | Other Liabilities [Member]
Financial Insturments, Fair Value [Line Items]
Fair Value Disclosure, Recurring	0	0
Whole Loan Contracts [Member] | Other Assets [Member]
Financial Insturments, Fair Value [Line Items]
Financial Instrument, Fair Value	0	0
Whole Loan Contracts [Member] | Other Liabilities [Member]
Financial Insturments, Fair Value [Line Items]
Fair Value Disclosure, Recurring	$ 157	$ 154