Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 5,885	$ 141,053
Accounts receivable, net	88,753	151,096
Inventories	132,115	83,753
Prepaid expenses and other assets	18,647	25,152
Total current assets	245,400	401,054
Property, plant and equipment, net	536,359	460,365
Operating lease assets	34,933	34,571
Goodwill and other intangible assets, net	18,687	19,001
Other assets	6,519	5,330
Total assets	841,898	920,321
Current liabilities:
Accounts payable	21,880	24,861
Accrued expenses and other liabilities	76,495	58,041
Accrued warranty	6,300	5,800
Line of credit	76,000
Total current liabilities	180,675	88,702
Deferred income taxes	43,967	43,967
Operating lease liabilities	27,909	28,263
Non-current accrued warranty	21,249	22,795
Other long-term liabilities	11,560	11,560
Total liabilities	285,360	195,287
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.01 par value, 3,000,000 shares authorized; none issued and outstanding	0	0
Common stock, $0.01 par value, 360,000,000 shares authorized; and 140,820,228 and 140,734,753 shares issued, respectively	1,408	1,407
Additional paid-in capital	129,784	127,787
Retained earnings	1,120,598	946,048
Treasury stock, at cost, 30,946,057 and 25,586,601 shares, respectively	(695,252)	(350,208)
Total stockholders' equity	556,538	725,034
Total liabilities and stockholders' equity	$ 841,898	$ 920,321