CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 97,825	$ 39,293
Restricted cash	9,492	12,772
Accounts receivable, net of allowance for doubtful accounts of $108 and $114, respectively	137,789	99,799
Accounts receivable – related party	2	0
Inventory	18,942	19,336
Derivative assets	347	61
Income tax receivable	6,424	13,288
Prepayments and other current assets	2,389	2,964
Total current assets	273,210	187,513
Property and equipment, net	88,036	94,134
Operating lease right-of-use assets, net	7,113	8,051
Intangible assets, net	3,317	4,106
Other assets	3,027	2,383
Total assets	374,703	296,187
Current liabilities:
Accounts payable	168,224	85,991
Derivative liabilities	324	52
Current portion of finance lease obligations	3,663	4,112
Operating lease liabilities	2,178	2,050
Other current liabilities	11,622	22,343
Total current liabilities	186,011	114,548
Other long-term liabilities:
Asset retirement obligations	2,376	2,308
Total long-term lease obligation	9,672	11,507
Operating lease liabilities	4,938	6,000
Deferred taxes and other liabilities	11,320	12,732
Total liabilities	214,317	147,095
Commitments and contingencies (Note 18)
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, 4,355,001 and 4,243,716 shares outstanding, respectively	433	423
Contributed capital	16,913	13,340
Retained earnings	143,040	135,329
Total shareholders’ equity	160,386	149,092
Total liabilities and shareholders’ equity	$ 374,703	$ 296,187