Long-Term Trade And Unbilled Receivables (Tables)

12 Months Ended

Dec. 31, 2018

Billed and Unbilled Contract Claims Subject to Uncertainty [Abstract]

Schedule Of Long-Term Trade And Unbilled Receivables

	December 31,
	2018		2017
Trade and unbilled receivables	$	112,955	$	63,833
Contract assets (*)	184,190		231,563
	$	297,145	$	295,396