CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash Flows from Operating Activities
Net income	$ 34,206us-gaap_ProfitLoss	$ 39,214us-gaap_ProfitLoss	$ 40,989us-gaap_ProfitLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of subsidiary	0	0	(5,358)
Depreciation	21,343us-gaap_Depreciation	20,966us-gaap_Depreciation	20,945us-gaap_Depreciation
Amortization	3,033us-gaap_AdjustmentForAmortization	1,299us-gaap_AdjustmentForAmortization	2,103us-gaap_AdjustmentForAmortization
Provision for doubtful accounts	1,011us-gaap_ProvisionForDoubtfulAccounts	629us-gaap_ProvisionForDoubtfulAccounts	759us-gaap_ProvisionForDoubtfulAccounts
Provision for warranty	12,796us-gaap_ProductWarrantyExpense	12,199us-gaap_ProductWarrantyExpense	11,152us-gaap_ProductWarrantyExpense
Deferred compensation provision	74	601	115
Deferred income tax provision (benefit)	(2,544)	(2,220)	6,223
Gain on disposition of fixed assets	(306)	(163)	(256)
Tax expense (benefit) from stock incentive exercises	(586)	8	(107)
Stock-based compensation	1,200us-gaap_ShareBasedCompensation	1,461us-gaap_ShareBasedCompensation	1,285us-gaap_ShareBasedCompensation
Sale (purchase) of trading securities, net	118	(1,350)	(146)
(Increase) decrease in:
Trade and other receivables	(6,924)us-gaap_IncreaseDecreaseInReceivables	(8,849)us-gaap_IncreaseDecreaseInReceivables	7,555us-gaap_IncreaseDecreaseInReceivables
Inventories	(41,933)us-gaap_IncreaseDecreaseInInventories	(36,561)us-gaap_IncreaseDecreaseInInventories	(41,145)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses	(7,189)	(5,433)	(1,655)
Other assets	(4,763)	(3,215)	(1,566)
Increase (decrease) in:
Accounts payable	10,755	1,028	(6,425)
Customer deposits	5,483	(5,436)	4,918
Accrued product warranty	(15,563)	(10,163)	(11,021)
Income taxes payable	2,064	(823)	1,611
Accrued retirement benefit costs	(201)	(324)	(218)
Accrued loss reserves	305	199	(1,435)
Other accrued liabilities	3,289	1,085	298
Other	3,195	1,709	12
Net cash provided by operating activities	18,863	5,861	28,633
Cash Flows from Investing Activities
Business acquisitions, net of cash acquired	(34,965)	0	0
Proceeds from sale of subsidiary	0	0	42,940
Proceeds from sale of property and equipment	743	424	375
Expenditures for property and equipment	(24,851)	(27,673)	(26,018)
Sale (purchase) of short-term investments	16,249us-gaap_PaymentsToAcquireInvestments	(15,000)us-gaap_PaymentsToAcquireInvestments	0us-gaap_PaymentsToAcquireInvestments
Net cash provided (used) by investing activities	(42,824)	(42,249)	17,297
Cash Flows from Financing Activities
Payment of dividends	(9,167)us-gaap_PaymentsOfDividends	(6,856)us-gaap_PaymentsOfDividends	(22,790)us-gaap_PaymentsOfDividends
Debt borrowings	10,462	0	0
Repayment of debt	(103)us-gaap_RepaymentsOfDebt	0us-gaap_RepaymentsOfDebt	0us-gaap_RepaymentsOfDebt
Proceeds from issuance of common stock	282	112	514
Tax (expense) benefit from stock option exercise	586	(8)	107
Cash from sale of shares of subsidiaries	1,428	735	904
Sale (purchase) of company shares by Supplemental Executive Retirement Plan, net	(95)	213	(373)
Withholding tax paid upon vesting of restricted stock units	(953)	(782)	(834)
Net cash provided (used) by financing activities	2,440	(6,586)	(22,472)
Effect of exchange rates on cash	(1,020)	(2,391)	(34)
Increase (decrease) in cash and cash equivalents	(22,541)	(45,365)	23,424
Cash and cash equivalents, beginning of year	35,564	80,929	57,505
Cash and cash equivalents, end of year	13,023	35,564	80,929
Cash paid during the year for:
Interest	476us-gaap_InterestPaid	229us-gaap_InterestPaid	366us-gaap_InterestPaid
Income taxes, net of refunds	$ 23,027us-gaap_IncomeTaxesPaidNet	$ 20,331us-gaap_IncomeTaxesPaidNet	$ 13,722us-gaap_IncomeTaxesPaidNet

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or the sale of investment in consolidated subsidiaries (generally greater than 50 percent).

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-Publisher FASB

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The cash inflow from the additional capital contribution to the entity.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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Total increases or decreases in the standard and extended product warranty liability during the period.

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The expense charged against earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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-Publisher FASB

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 5

-Article 5

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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