Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income (loss)	$ 4,394	$ (21,201)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization expense	22,549	21,809
Write-down of equipment	0	21,117
Stock-based compensation expense	2,937	4,629
Amortization of deferred costs	1,327	1,308
Loss from joint ventures	1,161	2,616
Payments received on sales-type leases	301	0
Allowances and provisions	173	305
Loss (Gain) on sale of leased equipment	133	(2,298)
Deferred income taxes	2,081	(7,035)
Changes in assets and liabilities:
Receivables	(6,688)	(3,280)
Inventory	1,543	3,407
Other assets	(4,345)	(863)
Accounts payable and accrued expenses	7,612	6,122
Maintenance reserves	10,165	2,626
Security deposits	1,149	(462)
Unearned revenue	7,379	(480)
Net cash provided by operating activities	51,871	28,320
Cash flows from investing activities:
Proceeds from sale of equipment (net of selling expenses)	7,582	17,255
Issuance of notes receivable	(15,397)	0
Payments received on notes receivable	792	1,203
Purchase of equipment held for operating lease and for sale	(55,686)	(24,220)
Purchase of property, equipment and furnishings	(1,573)	(540)
Net cash used in investing activities	(64,282)	(6,302)
Cash flows from financing activities:
Proceeds from debt obligations	42,000	21,000
Principal payments on debt obligations	(53,458)	(53,257)
Proceeds from shares issued under stock compensation plans	177	165
Repurchase of common stock	0	(1,768)
Preferred stock dividends	(819)	(819)
Net cash used in financing activities	(12,100)	(34,679)
Decrease in cash, cash equivalents and restricted cash	(24,511)	(12,661)
Cash, cash equivalents and restricted cash at beginning of period	89,016	95,641
Cash, cash equivalents and restricted cash at end of period	64,505	82,980
Net cash paid for:
Interest	23,128	15,057
Income Taxes	179	213
Supplemental disclosures of non-cash activities:
Transfers from Equipment held for operating lease to Other assets	1,089	0
Transfers from Equipment held for operating lease to Spare parts inventory	127	102
Transfers from Equipment held for operating lease to Equipment held for sale	0	4,089
Accrued share repurchases	0	73
Accrued preferred stock dividends	$ 18	$ 18