Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Accumulated depreciation	$ 10,716	$ 8,666
Receivables, allowances	$ 2,006	$ 1,730
Redeemable preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Redeemable preferred stock, shares authorized (in shares)	2,500,000	2,500,000
Redeemable preferred stock, shares issued (in shares)	2,500,000	2,500,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	6,559,000	6,356,000
Accumulated other comprehensive loss, income tax benefit	$ 1,508	$ 896
Cash and cash equivalents	91,485	6,720
Restricted cash	66,373	56,948
Maintenance rights	767	3,133
Spare parts inventory	54,986	41,759
Other assets	27,296	28,038
Debt obligations	1,462,730	1,251,006
Variable Interest Entity
Cash and cash equivalents	0	134
Restricted cash	66,317	56,523
Equipment	1,081,757	1,004,851
Maintenance rights	767	3,133
Spare parts inventory	4,367	2,832
Other assets	1,240	668
Debt obligations	935,064	842,996
Assets Leased to Others
Accumulated depreciation	$ 437,557	$ 414,835