Note 1 - General and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Cash and Cash Equivalents [Table Text Block]

	March 31,		December 31,		March 31,
	2020		2019		2019
	(Dollars in thousands)
Cash and cash equivalents	$	231,149	$	71,173	$	79,366
Restricted cash and cash equivalents		88,627		81,937		93,098
Total Cash and cash equivalents and restricted cash and cash equivalents	$	319,776	$	153,110	$	172,464

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

	March 31,			December 31,
	2020			2019
	(Dollars in thousands)
Contract assets (*)	$	22,305		$	38,365
Contract liabilities (*)		(5,937	)		(2,755	)
Contract assets, net	$	16,368		$	35,610

Operating Lease, Lease Income [Table Text Block]

	Three Months Ended March 31,
	2020		2019
	(Dollars in thousands)
Lease income relating to lease payments of operating leases	$	126,076	$	125,908
Total	$	126,076	$	125,908