Fair Value - Financial Assets Accounted for at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 60,193	$ 88,179
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value	48,768
Certificates of deposit [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	48,666	73,507
Equity Funds [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value		0
Residential Mortgage Backed Securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	8,037	10,478
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	8,037
Collateralized Debt Obligations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	2,977	3,685
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	2,977
Municipal Bonds [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	513	509
Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	60,193	88,179
Nonrecurring [Member] \| Certificates of deposit [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	48,666	73,507
Nonrecurring [Member] \| Mortgage-backed securities - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	8,037	10,478
Nonrecurring [Member] \| Collateralized mortgage obligations - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	2,977	3,685
Nonrecurring [Member] \| Municipal Securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	513	509
Nonrecurring [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Certificates of deposit [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Mortgage-backed securities - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Collateralized mortgage obligations - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Municipal Securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] \| Significant Observable Inputs (Level 2) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	60,193	88,179
Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Certificates of deposit [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Mortgage-backed securities - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Collateralized mortgage obligations - residential [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Municipal Securities [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	0	0
Estimate of Fair Value Measurement [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	60,193	88,179
Estimate of Fair Value Measurement [Member] \| Significant Observable Inputs (Level 2) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	60,193	88,179
Estimate of Fair Value Measurement [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 0	$ 0

Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

No definition available.

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- Definition

Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), without single maturity date and not allocated over maturity grouping.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
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+ References

No definition available.

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