XML 46 R31.htm IDEA: XBRL DOCUMENT

Quarterly Financial Information (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Information

(in thousands, except per share amounts)

		Quarter Ended
		March 31				June 30				September 30				December 31
Year ended December 31, 2017
Revenues		$	209,997			$	225,574			$	240,135			$	244,726
Cost of revenues			199,547				181,360				185,218				195,776
Gross margin			10,450				44,214				54,917				48,950
Net (loss) income			(11,227	)			11,126				14,785				10,486
Basic (loss) income per common share			(1.55	)			1.53				2.03				1.44
Diluted (loss) income per common share			(1.55	)			1.47				1.96				1.38

Year ended December 31, 2016
Revenues		$	190,968			$	203,417			$	225,103			$	221,098
Cost of revenues			180,581				161,164				175,544				177,761
Gross margin			10,387				42,253				49,559				43,337
Net (loss) income			(8,003	)			8,522				10,233				8,047
Basic (loss) income per common share			(1.11	)			1.18				1.41				1.11
Diluted (loss) income per common share			(1.11	)			1.16				1.38				1.08