UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities:
Net (losses) earnings	$ (11,427)	$ 4,908
Adjustments to reconcile net losses earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	4,473	3,589
Gains on sales of property	(140)	(178)
Provision for doubtful accounts	(24)	(32)
Stock-based compensation expense	134	123
Deferred income taxes	(2,689)	834
Net change in fair value contracts	(19)	19
Gain on dissolution of AREC	0	(498)
Changes in assets and liabilities:
Accounts receivable	41,617	(2,866)
Accounts receivable/payable, affiliates	1	(23)
Inventories	16,386	(6,458)
Income tax receivable	(5,530)	426
Prepayments and other current assets	253	(52)
Accounts payable	(68,384)	17,914
Accrued liabilities	1,506	2,432
Other	(3)	878
Net cash provided by (used in) operating activities	(23,846)	21,016
Investing activities:
Property and equipment additions	(2,212)	(8,351)
Proceeds from property sales	502	543
Proceeds from dissolution of AREC	0	923
Insurance and state collateral (deposits) refunds	1,128	842
Net cash used in investing activities	(582)	(6,043)
Financing activities:
Principal repayments of finance lease obligations	(532)	(218)
Payment of contingent consideration liability	(54)	0
Dividends paid on common stock	(1,016)	(928)
Net cash used in financing activities	(1,602)	(1,146)
(Decrease) Increase in cash and cash equivalents, including restricted cash	(26,030)	13,827
Cash and cash equivalents, including restricted cash, at beginning of period	122,255	117,066
Cash and cash equivalents, including restricted cash, at end of period	$ 96,225	$ 130,893