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Securities - Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Amortized cost and fair values of securities |  |
Total Fair value | $ 83,240 | $ 88,179
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost | 69,519 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value | 69,522 |
Amortized Cost | 82,863 | 87,808
Gross Unrealized Gains | 409 | 411
Gross Unrealized Losses | (32) | (40)
Certificates of Deposit [Member] |  |
Amortized cost and fair values of securities |  |
Total Fair value | 69,011 | 73,507
Amortized Cost | 69,011 | 73,507
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Municipal Bonds [Member] |  |
Amortized cost and fair values of securities |  |
Total Fair value | 511 | 509
Available-for-sale Securities, Amortized Cost Basis | 508 | 509
Equity mutual fund [Member] |  |
Amortized cost and fair values of securities |  |
Total Fair value | 0 | 0
Mortgage - backed securities - residential [Member] |  |
Amortized cost and fair values of securities |  |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost | 9,828 |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 10,207 |
Total Fair value | 10,207 | 10,478
Amortized Cost | 9,828 | 10,116
Gross Unrealized Gains | 401 | 400
Gross Unrealized Losses | (22) | (38)
Collateralized mortgage obligations - residential [Member] |  |
Amortized cost and fair values of securities |  |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost | 3,516 |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 3,511 |
Total Fair value | 3,511 | 3,685
Amortized Cost | 3,516 | 3,676
Gross Unrealized Gains | 5 | 11
Gross Unrealized Losses | (10) | (2)
Common Class B [Member] | Equity mutual fund [Member] |  |
Amortized cost and fair values of securities |  |
Total Fair value |  | 3,427
Amortized Cost |  | 0
Gross Unrealized Gains |  | 3,427
Gross Unrealized Losses |  | 0
Fair Value, Measurements, Nonrecurring [Member] |  |
Amortized cost and fair values of securities |  |
Total Fair value | 83,240 | 88,179
Fair Value, Measurements, Nonrecurring [Member] | Certificates of Deposit [Member] |  |
Amortized cost and fair values of securities |  |
Total Fair value | 69,011 | 73,507
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |
Amortized cost and fair values of securities |  |
Total Fair value | 83,240 | $ 88,179
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Certificates of Deposit [Member] |  |
Amortized cost and fair values of securities |  |
Total Fair value | $ 69,011 |

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