Note 1 - General and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Schedule of Cash and Cash Equivalents [Table Text Block]

	March 31,		December 31,		March 31,
	2019		2018		2018
	(Dollars in thousands)
Cash and cash equivalents	$	79,366	$	98,802	$	54,723
Restricted cash and cash equivalents		93,098		78,693	$	50,332
Total Cash and cash equivalents and restricted cash and cash equivalents	$	172,464	$	177,495	$	105,055

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

	March 31,			December 31,
	2019			2018
	(Dollars in thousands)
Contract assets (*)	$	29,762		$	42,130
Contract liabilities (*)		(15,508	)		(18,402	)
Contract assets, net	$	14,254		$	23,728