Employee Benefit Plans and Insurance Schedule of Accrued Insurance Liabilities, Self-Insurance Program (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accrued Insurance Liabilities, Self-Insurance Program [Line Items]
Accrued Insurance, Current	$ 5,940	$ 5,482
Workers' compensation [Member]
Accrued Insurance Liabilities, Self-Insurance Program [Line Items]
Accrued Insurance, Current	3,269	2,992
Health insurance [Member]
Accrued Insurance Liabilities, Self-Insurance Program [Line Items]
Accrued Insurance, Current	1,282	1,834
General liability and auto liability [Member]
Accrued Insurance Liabilities, Self-Insurance Program [Line Items]
Accrued Insurance, Current	$ 1,389	$ 656

Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6935-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6911-107765

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_AccruedInsuranceCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant