CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Apr. 28, 2018	Apr. 29, 2017
REVENUES:
Contract revenues	$ 731,375	$ 786,338
EXPENSES:
Costs of earned revenues, excluding depreciation and amortization	599,573	621,475
General and administrative (including stock-based compensation expense of $4.9 million and $4.9 million, respectively)	62,283	61,317
Depreciation and amortization	43,355	37,411
Total	705,211	720,203
Interest expense, net	(10,166)	(9,382)
Other income, net	7,711	4,793
Income before income taxes	23,709	61,546
Provision (benefit) for income taxes:
Current	1,095	25,519
Deferred	5,383	(2,769)
Total provision for income taxes	6,478	22,750
Net income	$ 17,231	$ 38,796
Earnings per common share:
Basic earnings per common share (in dollars per share)	$ 0.55	$ 1.24
Diluted earnings per common share (in dollars per share)	$ 0.53	$ 1.22
Shares used in computing earnings per common share:
Basic (in shares)	31,190,366	31,357,124
Diluted (in shares)	32,407,914	31,909,926