Earnings per share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Schedule of components of diluted (loss) earnings per share

The following table sets forth the components of diluted (loss) earnings per share (in thousands, except share and per share amounts):

	Three months ended June 30, 2016			Three months ended June 30, 2015		Six months ended June 30, 2016			Six months ended June 30, 2015
Numerator
Net (loss) income	$	(63,528	)	$	13,092	$	(109,186	)	$	25,516
Denominator
Weighted average common stock outstanding – basic	54,616,221			57,208,273		54,998,171			57,204,602
Stock options using the treasury method	—			195,420		—			198,066
Restricted stock	—			4,152		—			4,585
Weighted average common stock outstanding – diluted	54,616,221			57,407,845		54,998,171			57,407,253
(Loss) earnings per basic share	$	(1.16	)	$	0.23	$	(1.99	)	$	0.45
(Loss) earnings per diluted share	$	(1.16	)	$	0.23	$	(1.99	)	$	0.44

Schedule of antidilutive securities excluded from computation of earnings per share

We excluded the items presented below from the calculation of diluted earnings per share as they were antidilutive for the periods indicated:

	Three months ended June 30, 2016	Three months ended June 30, 2015	Six months ended June 30, 2016	Six months ended June 30, 2015
Denominator (in weighted-average shares)
Stock options	153,714	—	156,365	—
Restricted stock	5,688	—	5,482	—