Debt - October 2019 ABL Credit Agreement (Details) - USD ($)		3 Months Ended	12 Months Ended
	Oct. 25, 2019	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Line of Credit Facility [Line Items]
Repayments of outstanding debt			$ 5,000,000	$ 0	$ 39,000,000
Debt issuance costs	$ 1,300,000		2,058,000	$ 308,000	$ 901,000
Senior Secured Asset-Based Loan
Line of Credit Facility [Line Items]
Line of credit term	5 years
Maximum borrowing capacity	$ 120,000,000.0	$ 120,000,000.0	120,000,000.0
Borrowing base, percentage of assets	85.00%
Supplemental availability	$ 16,900,000
Accordion provision	30,000,000
Outstanding loan amount		71,000,000	71,000,000
Letters of credit outstanding	21,200,000	19,900,000	19,900,000
Remaining borrowing capacity		29,100,000	$ 29,100,000
Unused commitment fee percentage			0.375%
Swingline Sublimit | Senior Secured Asset-Based Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity	15,000,000.0
Standby Letters Of Credit Sublimit | Senior Secured Asset-Based Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity	35,000,000.0
Amended And Restated Credit Agreement
Line of Credit Facility [Line Items]
Repayments of outstanding debt	$ 75,400,000
Write off of debt issuance costs		$ 1,400,000
LIBOR | Senior Secured Asset-Based Loan
Line of Credit Facility [Line Items]
Interest margin			2.00%
LIBOR | Senior Secured Asset-Based Loan, Supplemental Activities Lending
Line of Credit Facility [Line Items]
Interest margin			4.00%
Base Rate | Senior Secured Asset-Based Loan
Line of Credit Facility [Line Items]
Interest margin			1.00%
Base Rate | Senior Secured Asset-Based Loan, Supplemental Activities Lending
Line of Credit Facility [Line Items]
Interest margin			3.00%