Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Common stock withheld to satisfy income tax withholding obligations relating to restricted stock units (shares)	278,799	308,533

Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

No definition available.

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