Stock Based Compensation Restricted Stock Units Granted and Unvested (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested RSUs	13,881	6,043
2014 Equity Plan [Member] \| Executive Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs Granted	17,102
Number of Unvested RSUs	12,696
2014 Equity Plan [Member] \| 2017 Award [Member] \| Executive Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs Granted	3,225
Weighted-Average Grant Date Fair Value	$ 52.95
Number of Unvested RSUs	433
2014 Equity Plan [Member] \| 2018 Award [Member] \| Executive Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs Granted	3,734
Weighted-Average Grant Date Fair Value	$ 47.75
Number of Unvested RSUs	2,120
2014 Equity Plan [Member] \| 2019 Award [Member] \| Executive Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs Granted	10,143
Weighted-Average Grant Date Fair Value	$ 36.26
Number of Unvested RSUs	10,143

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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

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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.

+ References

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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

No definition available.

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- Definition

Net number of non-option equity instruments granted to participants.

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

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