Note 1 - General and Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2020

Notes Tables

Schedule of Cash and Cash Equivalents [Table Text Block]

	June 30,		December 31,		June 30,
	2020		2019		2019
	(Dollars in thousands)
Cash and cash equivalents	$	173,718	$	71,173	$	110,665
Restricted cash and cash equivalents		76,116		81,937		70,974
Total Cash and cash equivalents and restricted cash and cash equivalents	$	249,834	$	153,110	$	181,639

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

	June 30,			December 31,
	2020			2019
	(Dollars in thousands)
Contract assets (*)	$	19,477		$	38,365
Contract liabilities (*)	$	(5,599	)	$	(2,755	)

Operating Lease, Lease Income [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
	(Dollars in thousands)				(Dollars in thousands)
Lease income relating to lease payments from operating leases	$	113,083	$	116,138	$	239,159	$	242,046