Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Summary of Significant Accounting Policies

Schedule of the Company sales to major customers (purchases in excess of 10% of total sales)

	2014		2015		2016
Company A	5	%	19	%	29	%
Company B	—		—		13
Company C	16		13		3
Company D	29		18		2
Company E	12		9		1
All others	38		41		52
	100	%	100	%	100	%

Reconciliation of basic weighted average shares outstanding to diluted weighted average shares outstanding

The following is a reconciliation of the Company’s basic weighted average shares outstanding to diluted weighted average shares outstanding during the periods presented (in thousands):

	Year ended December 31,
	2014	2015	2016
Basic weighted average number of shares outstanding	262,054	274,123	294,945
Add: Dilutive effect of non-vested restricted stock units	14	20	—
Add: Dilutive effect of outstanding stock options	—	—	—
Add: Dilutive effect of performance stock units	—	—	—
Diluted weighted average number of shares outstanding	262,068	274,143	294,945
Weighted average number of outstanding equity awards excluded from calculation of diluted earnings per common share(1):
Non-vested restricted stock and restricted stock units	1,444	2,264	6,740
Outstanding stock options	73	553	702
Performance stock units	—	—	659

(1)   The potential dilutive effects of these awards were excluded from the computation of earnings per common share—assuming dilution because the inclusion of these awards would have been anti-dilutive.  When the Company incurs a net loss, all outstanding equity awards are excluded from the calculation of diluted loss per common share because the inclusion of these awards would be anti-dilutive.

Summary of adjustments from early adoption of new accounting pronouncement

The retrospective adjustment to the consolidated statement of cash flows for the year ended December 31, 2015 is as follows (in thousands):

	As Previously Reported				As Adjusted
	Year Ended December 31, 2015		Adjustment Effect		Year Ended December 31, 2015
Changes in accrued liabilities	$	26,946		9,431		36,377
Employee tax withholding for settlement of equity compensation awards		—		(9,431)		(9,431)