Stock Based Compensation (Details) - Class B [Member] - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
Nov. 13, 2018	Mar. 31, 2019
Stock Based Compensation [Abstract]
Shares distribution period from grant date		1 year
5/9/2017 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		18,183
Vesting date		May 09, 2018
Service period		7/1/2017 - 6/30/2018
Grant date fair value per share (in dollars per share)		$ 24.20
8/31/2017 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		1,257
Vesting date		May 09, 2018
Service period		8/31/2017 - 6/30/2018
Grant date fair value per share (in dollars per share)		$ 21.90
2/9/2018 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		408
Vesting date		May 09, 2018
Service period		2/9/2018 - 6/30/2018
Grant date fair value per share (in dollars per share)		$ 24.20
5/8/2018 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		19,085
Vesting date		May 08, 2019
Service period		7/1/2018 - 6/30/2019
Grant date fair value per share (in dollars per share)		$ 23.05
5/7/2019 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		29,536
Vesting date		May 07, 2020
Service period		7/1/2019 - 6/30/2020
Grant date fair value per share (in dollars per share)		$ 16.25
Restricted [Member] \| Chief Executive Officer [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)	85,000
Stock based compensation expense		$ 309
Restricted [Member] \| Chief Executive Officer [Member] \| 10/17/2019 [Member]
Summary of stock Issuances [Abstract]
Number of shares vested (in shares)	42,500
Restricted [Member] \| Chief Executive Officer [Member] \| 10/17/2020 [Member]
Summary of stock Issuances [Abstract]
Number of shares vested (in shares)	21,250
Restricted [Member] \| Chief Executive Officer [Member] \| 10/17/2021 [Member]
Summary of stock Issuances [Abstract]
Number of shares vested (in shares)	21,250
2017 VCIP Awards [Member] \| Performance Based Equity Award [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		0
Performance period		3 years
2018 LTIP Awards [Member] \| Performance Based Equity Award [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		0
2018 VCIP Awards [Member] \| Performance Based Equity Award [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		0
Performance period		3 years
2019 LTIP Awards [Member] \| Performance Based Equity Award [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)		0
Vesting period		3 years
Stock based compensation expense		$ 24
Annual vesting percentage of shares in year one		33.30%
Annual vesting percentage of shares in year two		33.30%
Annual vesting percentage of shares in year three		33.30%

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Represents percentage of vesting in year three after date of grant.

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Represents percentage of vesting in year two after date of grant.

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Period over which certain results must be met in accordance with a established performance matrix for employee to earn the right to receive performance-based equity awards.

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Date the equity-based award vests, in CCYY-MM-DD format.

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Period which an executive's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

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Period for distributing shares following the grant date of the shares.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB
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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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