Share-based Incentive Plan - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock Compensation Expense	$ 633	$ 177
2017 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized under the plan	4,600,463
Share vesting installment period	4 years
Total unrecognized compensation cost relating to unvested share-based compensation arrangements	$ 5,200
Unrecognized compensation cost, recognition period	1 year 7 months 6 days
Stock Compensation Expense	$ 600
2017 Equity Incentive Plan \| Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock expected to vest	327,901
2017 Equity Incentive Plan \| 2019 \| Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock expected to vest	100,305
2017 Equity Incentive Plan \| 2020 \| Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock expected to vest	93,876
2017 Equity Incentive Plan \| 2021 \| Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock expected to vest	93,877
2017 Equity Incentive Plan \| 2022 \| Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of common stock expected to vest	39,843

Share based compensation arrangement by share based payment award, number of shares expected to vest in period.

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- Definition

Share based compensation arrangement by share based payment award shares outstanding number.

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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-Publisher FASB
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-Section 50
-Paragraph 2
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