UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 70,215	$ 112,994
Restricted cash	7,982	9,261
Accounts receivable, net of allowance for doubtful accounts of $117 and $141, respectively	67,455	94,534
Inventory	19,837	26,407
Derivative assets	26	0
Income tax receivable	10,005	2,569
Prepayments and other current assets	1,297	1,559
Total current assets	176,817	247,324
Property and equipment, net	69,280	69,046
Operating lease right-of-use assets, net	8,599	9,576
Intangible assets, net	4,491	1,597
Cash deposits and other assets	2,147	3,299
Total assets	261,334	330,842
Current liabilities:
Accounts payable	83,410	147,851
Accounts payable – related party	6	5
Derivative liabilities	14	0
Current portion of finance lease obligations	2,482	2,167
Current portion of operating lease liabilities	2,159	2,252
Other current liabilities	11,167	7,302
Total current liabilities	99,238	159,577
Other long-term liabilities:
Asset retirement obligations	1,598	1,573
Finance lease obligations	4,647	4,376
Operating lease liabilities	6,442	7,323
Deferred taxes and other liabilities	7,519	6,352
Total liabilities	119,444	179,201
Commitments and contingencies (Note 14)
Shareholders’ equity:
Preferred stock - $1.00 par value, 960,000 shares authorized, none outstanding	0	0
Common stock - $0.10 par value, 7,500,000 shares authorized, 4,235,750 and 4,235,533 shares outstanding, respectively	423	423
Contributed capital	13,001	12,778
Retained earnings	128,466	138,440
Total shareholders’ equity	141,890	151,641
Total liabilities and shareholders’ equity	$ 261,334	$ 330,842