Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 3,352	$ 9,748
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	90,504	94,541
Write-down of equipment	7,715	20,540
Stock-based compensation expenses	16,578	11,378
Amortization of deferred costs	5,016	5,140
Allowances and provisions	(164)	5
Gain on sale of leased equipment	(5,975)	(3,391)
Income from joint ventures	(800)	(2,642)
(Gain) Loss on sale of note receivable	(10,874)	79
Loss (Gain) on disposal of property, equipment and furnishings	44	(9)
Loss on debt extinguishment	0	4,688
Deferred income taxes	4,193	6,953
Changes in assets and liabilities:
Receivables	(11,191)	(4,215)
Distributions received from joint ventures	0	7,200
Inventory	7,923	7,026
Other assets	(787)	(16,252)
Accounts payable and accrued expenses	58	(18,441)
Maintenance reserves	(17,582)	(24,386)
Security deposits	3,827	(1,166)
Unearned revenue	(1,179)	(3,352)
Net cash provided by operating activities	90,658	93,444
Cash flows from investing activities:
Proceeds from sale of equipment (net of selling expenses)	37,626	26,078
Proceeds from sale of note receivable (net of selling expenses)	58,363	8,431
Issuance of notes receivable	(44,444)	(136,583)
Payments received on notes receivable	8,404	7,630
Purchase of equipment held for operating lease and for sale	(205,779)	(409,250)
Purchase of property, equipment and furnishings	(2,165)	(2,976)
Net cash used in investing activities	(147,995)	(506,670)
Cash flows from financing activities:
Proceeds from issuance of debt obligations	513,700	973,200
Debt issuance costs	(4,556)	(6,065)
Principal payments on debt obligations	(416,966)	(530,783)
Debt prepayment costs	0	(2,373)
Proceeds from shares issued under stock compensation plans	186	428
Repurchase of common stock	(10,086)	(1,510)
Preferred stock dividends	(3,251)	(3,259)
Cancellation of restricted stock units in satisfaction of withholding tax	(4,974)	(1,155)
Net cash provided by financing activities	74,053	428,483
Increase in cash, cash equivalents and restricted cash	16,716	15,257
Cash, cash equivalents and restricted cash at beginning of period	78,925	63,668
Cash, cash equivalents and restricted cash at end of period	95,641	78,925
Net cash paid for:
Interest	50,291	54,339
Income Taxes	1,412	510
Supplemental disclosures of non-cash activities:
Liabilities assumed in purchase of equipment held for operating lease	0	8,868
Transfers from Equipment held for operating lease to Equipment held for sale	13,368	2,800
Transfers from Equipment held for operating lease to Spare parts inventory	4,467	24,702
Transfers from Spare parts inventory to Equipment held for operating lease	1,555	0
Transfers from Notes receivable to Equipment held for operating lease	27,804	0
Accretion of preferred stock issuance costs	$ 83	$ 84