Stockholders' Equity - Restricted Stock Units (Details) - Restricted Stock Units (RSUs) - USD ($)	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Number of Shares
Non-vested at beginning of period (in shares)	11,301
Vested (in shares)	(6,810)
Non-vested at end of period (in shares)	4,491
Weighted-Average Grant Date Fair Value Per Share
Nonvested, weighted average grant date fair value at end of period (in USD per share)	$ 15.38
Vested, weighted average grant date fair value (in USD per share)	13.98
Nonvested, weighted average grant date fair value at end of period (in USD per share)	$ 17.50
Equity instruments other than options, aggregate intrinsic value, nonvested	$ 4,536		$ 14,013
Equity instruments other than options, aggregate intrinsic value, vested	9,073
Equity instruments other than options, vested in period, fair value	$ 95,170	$ 126,983

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

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

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ 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 (c)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

+ References

No definition available.

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