Employee Benefits (Profit Sharing and 401k) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Profit sharing and 401(k) contributions for the periods
Profit-sharing contributions	$ 31	$ 926	$ 1,613
Retirement plan matching contributions	$ 1,597	$ 1,604	$ 1,602

Amount of discretionary contributions made by an employer to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration