Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Cash and cash equivalents	$ 100,096	$ 6,720
Restricted cash	71,312	56,948
Maintenance rights	767	3,133
Spare parts inventory	50,670	41,759
Other assets	28,534	28,038
Debt obligations	1,520,240	1,251,006
Operating lease related receivable, allowances	2,044	1,730
Property, equipment & furnishings, accumulated depreciation	$ 10,081	$ 8,666
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)	6,552,000	6,356,000
Accumulated other comprehensive loss, income tax expense	$ (1,781)	$ (896)
Variable Interest Entity
Cash and cash equivalents	0	134
Restricted cash	71,251	56,523
Equipment	1,098,181	1,004,851
Maintenance rights	767	3,133
Spare parts inventory	2,382	2,832
Other assets	778	668
Debt obligations	957,119	842,996
Assets Leased to Others
Property, equipment & furnishings, accumulated depreciation	$ 429,563	$ 414,835