Securities (Narrative) (Details)	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2019 USD ($)	Mar. 31, 2020 USD ($) numberOfSecurities	Dec. 31, 2019 USD ($) numberOfSecurities
Debt and Equity Securities, FV-NI [Line Items]
Debt Securities, Held-to-maturity, Transfer, Amount	$ 83,100,000
Debt Securities, Held-to-maturity, Transfer, Unrealized Gain (Loss)	810,000
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, before Tax	587,000
Debt Securities, Held-to-maturity, Transfer, Deferred Tax Liability	223,000
Unrealized loss position	72,591,000	$ 54,873,000	$ 72,591,000
Debt securities, available-for-sale, unrealized loss position, accumulated loss	645,000	1,657,000	645,000
Asset-backed securities pledged to secure certain deposits	47,400,000	52,800,000	47,400,000
Asset-backed securities pledged as collateral	0	0	0
Other-than temporary impairment charges		0	0
Available-for-sale	208,187,000	214,163,000	208,187,000
Debt and Equity Securities, Gain (Loss)		$ 329,000	$ 226,000
Number of securities sold | numberOfSecurities		28	20
Amortized Cost	206,113,000	$ 209,891,000	$ 206,113,000
Residential Mortgage Backed Securities Issued By US Government Sponsored Enterprises [Member]
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale	36,092,000	31,974,000	36,092,000
Amortized Cost	35,351,000	30,264,000	35,351,000
Residential Collateralized Mortgage Obligations, Issued By US Government Sponsored Enterprises [Member]
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale	146,932,000	134,284,000	146,932,000
Amortized Cost	145,479,000	131,135,000	145,479,000
Asset-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt and Equity Securities, FV-NI [Line Items]
Unrealized loss position	54,904,000	30,975,000	54,904,000
Debt securities, available-for-sale, unrealized loss position, accumulated loss	399,000	$ 625,000	$ 399,000
Available for sale securities with unrealized losses, average life		6 years 7 months 28 days	4 years 8 months 4 days
Available for sale securities with unrealized losses, average duration		5 years 11 months 4 days	4 years 2 months 19 days
Amortized Cost	56,800,000	$ 31,600,000	$ 56,800,000
Asset-backed Securities, Issued by Private Enterprises [Member]
Debt and Equity Securities, FV-NI [Line Items]
Unrealized loss position	136,000	17,934,000	136,000
Debt securities, available-for-sale, unrealized loss position, accumulated loss	12,000	920,000	12,000
Us Government Agencies Callable Agency Bonds [Member]
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale	2,002,000		2,002,000
Amortized Cost	2,001,000		2,001,000
Student Loan Trust Collateralized Mortgage Obligations [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt securities, available-for-sale, unrealized loss position, accumulated loss		$ 920,000
Available for sale securities with unrealized losses, average life		6 years 8 months 12 days
Available for sale securities with unrealized losses, average duration		5 years 10 months 17 days
Available-for-sale		$ 17,622,000
Amortized Cost		18,495,000
Asset Backed Securities Issued By States, Political Subdivisions or Agencies [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt securities, available-for-sale, unrealized loss position, accumulated loss	173,000	$ 112,000	$ 173,000
Available for sale securities with unrealized losses, average life		9 years 8 months 23 days	9 years 6 months 3 days
Available for sale securities with unrealized losses, average duration		8 years 5 months 8 days	8 years 2 months 4 days
Amortized Cost	11,500,000	$ 6,100,000	$ 11,500,000
Student Loan Trust and Other Collateralized Mortgage Obligations [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized Cost		18,900,000
Student Loan Trust Loans [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized Cost		$ 18,500,000
Debt Securities, Available-for-sale, Government Guaranty, Percent		97.00%
Available for Sale Securities Sold [Member]
Debt and Equity Securities, FV-NI [Line Items]
Available-for-sale	$ 31,600,000	$ 41,300,000	$ 31,600,000