CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income	$ 17,670	$ 18,118
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,337	10,516
Amortization of deferred loan costs	307	359
Stock-based compensation	1,474	1,160
Stock Based Compensation - Restricted Stock		50
Provision for bad debts	13	32
(Gain) loss on disposition of assets		(25)
Non-cash operating lease expense	5	(1)
Changes in operating assets and liabilities:
Receivables	1,549	1,362
Income taxes receivable/payable	28,640	2,581
Inventories	625	187
Prepaid expenses	887	521
Accounts payable	829	835
Accrued expenses	(1,802)	(257)
Net cash provided by operating activities	61,534	35,438
Cash flows from investing activities:
Proceeds from sale of assets		27
Change in construction accounts payable	(414)	(7,266)
Acquisition of property and equipment	(14,777)	(14,814)
Net cash used in investing activities	(15,191)	(22,053)
Cash flows from financing activities:
Payroll taxes from net exercise of stock options	(99)	(2,468)
Proceeds from exercise of stock options	1,015	5,206
Line-of-credit borrowings	61,000
Line-of-credit payments	(10,000)
Long-term debt borrowings		3,000
Principal payments on long-term debt	(7,000)	(13,000)
Loan issuance cost		(6,500)
Payment of dividends	(95,608)
Net cash used in financing activities	(50,692)	(13,762)
Change in cash and cash equivalents	(4,349)	(377)
Cash and cash equivalents at beginning of period	38,779	33,526
Cash and cash equivalents at end of period	34,430	33,149
Supplemental disclosure of cash flow information:
Cash paid for interest, net of amounts capitalized	$ 522	$ 293