Unearned Revenue (Tables)

3 Months Ended

Mar. 31, 2018

Deferred Revenue Disclosure [Abstract]

Schedule of Unearned Revenue

The following tables present our unearned revenue as of the respective periods (in thousands):

March 31, 2018

	Construction		Large Project Construction		Total
California	$	333,866	$	48,162	$	382,028
Northwest		362,225		—		362,225
Heavy Civil		54,596		2,233,174		2,287,770
Kenny		130,289		286,269		416,558
Total	$	880,976	$	2,567,605	$	3,448,581

January 1, 2018

	Construction		Large Project Construction		Total
California	$	365,771	$	40,283	$	406,054
Northwest		262,117		53,465		315,582
Heavy Civil		43,016		2,356,769		2,399,785
Kenny		154,524		307,904		462,428
Total	$	825,428	$	2,758,421	$	3,583,849