Stock-Based Compensation - Restricted Stock Units (Details)	3 Months Ended
Mar. 31, 2021 shares
Stock-Based Compensation Details
Amount of Common stock exchanged for each RSU vested (in shares)	1
Executive
Stock-Based Compensation Details
Stock-based awards issued (in shares)	26,850
Restricted Stock Units (RSUs)
Stock-Based Compensation Details
Stock-based awards issued (in shares)	7,300

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).

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)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration