Basis of Presentation and New Accounting Pronouncements (Tables)

3 Months Ended

Mar. 31, 2018

Summary of Activity in Allowance for Doubtful Accounts

Activity in the allowance for doubtful accounts was as follows:

Three Months Ended March 31, 2018
Balance, beginning of period	$	973
Additions charged to costs		287
Recoveries recognized in costs		(245	)
Write-offs	$	9
Balance, end of period	$	1,024

Summary of Financial Statement Affected by Application of ASU 2014-09 and Related Amendments

The amount by which each financial statement line item was affected by application of ASU 2014-09 and related amendments during the three-month period ended March 31, 2018 is as follows:

	Revenue Based on Previously Effective Guidance		New Revenue Standard Adjustment			Revenue Based on New Revenue Standard
Three Months Ended March 31, 2018
Product revenues	$	261,209	$	680		$	261,889
Income tax expense		3,177		(141	)		3,036
Net income		12,427		539			12,966
Basic earnings per share		0.34		0.01			0.35
Diluted earnings per share		0.34		0.01			0.35

Note 2 – Basis of Presentation and New Accounting Pronouncements – Continued

	Revenue Based on Previously Effective Guidance		New Revenue Standard Adjustment			Revenue Based on New Revenue Standard
March 31, 2018
Balance Sheet
Accounts receivable, net of allowance for doubtful accounts	$	196,616	$	—		$	196,616
Accrued liabilities	$	69,482	$	3,426		$	72,908
Unearned Revenue	$	3,374	$	3,426		$	6,800
Deferred income taxes, net	$	78,218	$	700		$	78,918
Accumulated earnings	$	337,758	$	(2,726	)	$	335,032