Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 9,748	$ 66,922
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	94,541	86,236
Write-down of equipment	20,540	18,220
Stock-based compensation expenses	11,378	7,787
Amortization of deferred costs	5,140	6,364
Allowances and provisions	5	(272)
Gain on sale of leased equipment	(3,391)	(20,044)
Income from joint ventures	(2,642)	(8,578)
Loss on sale of note receivable	79	0
(Gain) Loss on disposal of property, equipment and furnishings	(9)	42
Loss on debt extinguishment	4,688	220
Deferred income taxes	6,953	21,074
Changes in assets and liabilities:
Receivables	(4,215)	(517)
Distributions received from joint ventures	7,200	3,300
Inventory	7,026	29,114
Other assets	(16,252)	(2,519)
Accounts payable and accrued expenses	(18,441)	2,131
Maintenance reserves	(24,386)	22,282
Security deposits	(1,166)	(2,108)
Unearned revenue	(3,352)	661
Net cash provided by operating activities	93,444	230,315
Cash flows from investing activities:
Proceeds from sale of equipment (net of selling expenses)	26,078	191,891
Proceeds from sale of note receivable (net of selling expenses)	8,431	0
Issuance of notes receivable	(136,583)	(42,857)
Payments received on notes receivable	7,630	4,950
Capital contributions to joint ventures	0	(5,713)
Purchase of equipment held for operating lease	(409,250)	(289,385)
Purchase of property, equipment and furnishings	(2,976)	(6,330)
Net cash used in investing activities	(506,670)	(147,444)
Cash flows from financing activities:
Proceeds from issuance of debt obligations	973,200	340,120
Debt issuance costs	(6,065)	(3,142)
Principal payments on debt obligations	(530,783)	(428,081)
Interest bearing security deposits	0	(2,092)
Debt prepayment costs	(2,373)	0
Proceeds from shares issued under stock compensation plans	428	335
Repurchase of common stock	(1,510)	(3,567)
Preferred stock dividends	(3,259)	(3,250)
Cancellation of restricted stock units in satisfaction of withholding tax	(1,155)	(1,475)
Net cash provided by (used in) financing activities	428,483	(101,152)
Increase/(Decrease) in cash, cash equivalents and restricted cash	15,257	(18,281)
Cash, cash equivalents and restricted cash at beginning of period	63,668	81,949
Cash, cash equivalents and restricted cash at end of period	78,925	63,668
Net cash paid for:
Interest	54,339	63,585
Income Taxes	510	222
Supplemental disclosures of non-cash activities:
Liabilities assumed in purchase of equipment held for operating lease	8,868	2,515
Transfers from Equipment held for operating lease to Equipment held for sale	2,800	10,131
Transfers from Equipment held for operating lease to Spare parts inventory	24,702	23,931
Transfers from Equipment held for sale to Spare parts inventory	0	422
Accretion of preferred stock issuance costs	$ 84	$ 84