Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Schedule of Cash, Cash Equivalents and Investments

Year-End 2015 (In thousands)	Cash and cash equivalents		Short-term investments		Long-term investments
Held-to-maturity securities
Certificates of deposit	$	—	$	252	$	—
Available-for-sale securities
Debt securities	—		4,000		8,067
Cash and money market accounts	28,548		—		—
Total	$	28,548	$	4,252	$	8,067

At December 31, 2016 and January 2, 2016, cash, cash equivalents and investments consisted of the following:

Year-End 2016 (In thousands)	Cash and cash equivalents		Short-term investments		Long-term investments
Available-for-sale securities
Debt securities	—			$2,252		$10,033
Cash and money market accounts		$36,312	—		—
Total		$36,312		$2,252		$10,033

Allowance for Doubtful Accounts

Allowance for doubtful accounts	Balance at beginning of period		Charged to costs and expenses		Amounts written off, net of recoveries and other adjustments	Divestitures	Balance at end of period
Year ended December 31, 2016		$4,287	(357	)	1,598	192		$2,140
Year ended January 2, 2016		$5,096	1,394		2,203	—		$4,287
Year ended January 3, 2015		$6,208	343		1,455	—		$5,096

Schedule of Product Warranties

Activity associated with warranty obligations was as follows:

(In thousands)	2016			2015			2014
Balance at the beginning of the period		$16,227			$16,719			$13,840
Accrual assumed from acquisition	—			—			1,100
Accrual settled from divestiture	(538		)	—			—
Accruals for warranties issued during the period	20,055			19,995			18,951
Accrual (Recovery) related to pre-existing warranties	604			(334		)	172
Settlements made during the period	(21,098		)	(20,153		)	(17,344		)
Balance at the end of the period		$15,250			$16,227			$16,719

Schedule of Earnings Per Share, Basic and Diluted

The following table reconciles the numerators and denominators used in the calculation of basic and diluted earnings per share (EPS):

(In thousands, except per share data)	2016		2015		2014
Numerators:
Numerators for both basic and diluted EPS net income attributable to parent company		$85,577		$105,436	$	61,471
Denominators:
Denominator for basic EPS weighted- average common shares outstanding	44,414		44,285		44,760
Potentially dilutive shares from stock option plans	1,088		1,156		819
Denominator for diluted EPS	45,502		45,441		45,579
Earnings per share – basic		$1.93		$2.38		$1.37
Earnings per share – diluted		$1.88		$2.32		$1.35