Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Summary of Adjustments in Allowances for Doubtful Accounts and Sales Adjustments

The following table summarizes the changes in the allowances for doubtful accounts and sales adjustments:

	Years Ended December 31,
	2016			2015			2014
Balance at beginning of year	$	1,640		$	1,725		$	1,113
Provisions for losses - accounts receivable	4,484			1,756			1,897
Collection of accounts previously written off	—			153			—
Deductions for accounts charged off or credits issued	(2,728		)	(1,994		)	(1,285		)
Balance at end of year	$	3,396		$	1,640		$	1,725

Schedule of Change in Accounting Estimate

The impact to our previously reported quarterly results for fiscal year 2016 is as follows:

	Three Months Ended						Three Months Ended				Three Months Ended
	March 31, 2016						June 30, 2016				September 30, 2016
(In thousands, except per share amounts)	As Reported			As Adjusted			As Reported		As Adjusted		As Reported			As Adjusted
Income statements:
Income tax provision	$	10,495		$	9,350		$	11,323	$	5,188	$	14,155		$	989
Net income	$	17,079		$	18,224		$	18,872	$	25,007	$	22,264		$	35,430
Basic earnings per common share	$	0.47		$	0.50		$	0.52	$	0.69	$	0.61		$	0.97
Diluted earnings per common share	$	0.44		$	0.47		$	0.49	$	0.65	$	0.58		$	0.91
Diluted weighted average common shares outstanding	38,557			39,071			38,196		38,738		38,506			39,062
Statement of cash flows:
Net cash provided by operating activities	$	40,270		$	41,321		$	13,877	$	19,520	$	67,091		$	79,213
Net cash (used) provided by financing activities	$	(15,860	)	$	(16,911	)	$	5,668	$	25	$	(77,973	)	$	(90,095	)