CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash (used in) provided by operating activities
Net income (loss)	$ (22,982)	$ 8,248
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Amortization of intangible assets	3,053	3,638
Depreciation	5,147	5,161
Change in value and exercise of warrants	0	1,352
Stock-based compensation expense	607	1,248
Amortization of financing fees	1,594	698
Deferred income taxes	(1,452)	457
Loss on debt extinguishment and modifications	497	0
Other adjustments, net	(209)	277
Changes in operating assets and liabilities:
Accounts receivable, net	44,611	(18,095)
Inventory, net	(382)	(3,977)
Prepaid expenses and other assets	3,958	17,125
Accounts payable	(44,161)	(9,494)
Accrued expenses	11,106	13,948
Other noncurrent liabilities	(8,981)	(2,429)
Net cash (used in) provided by operating activities	(7,594)	18,157
Cash used in investing activities
Capital expenditures	(2,402)	(3,681)
Proceeds from corporate-owned life insurance	930	0
Other investing activities, net	60	23
Net cash used in investing activities	(1,412)	(3,658)
Cash provided by (used in) financing activities
Repayments of long-term debt and lease liabilities	(55,290)	(194)
Payments of deferred financing costs	(1,970)	(650)
Proceeds from revolving line of credit	180,298	544,146
Repayments of revolving line of credit	(89,826)	(559,232)
Proceeds from Weichai Warrant exercise	0	1,616
Other financing activities, net	58	(236)
Net cash provided by (used in) financing activities	33,270	(14,550)
Net increase (decrease) in cash, cash equivalents, and restricted cash	24,264	(51)
Cash, cash equivalents, and restricted cash at beginning of the year	3	54
Cash, cash equivalents, and restricted cash at end of the year	24,267	3
Reconciliation of cash, cash equivalents, and restricted cash to the Consolidated Balance Sheets
Total cash, cash equivalents, and restricted cash	$ 24,267	$ 54