Accounts Receivable (Accounts Receivable Of Continuing Operations) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts Receivable [Abstract]
Trade	$ 64,707	$ 79,100
Allowance for doubtful accounts	(1,417)	(1,485)
Accounts receivable, net, current, total	63,290	77,615
Other	3,342	872
Total accounts and other receivables	$ 66,632	$ 78,487