Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 28,532	$ 25,802
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	18,042	18,149
Provision (benefit) for doubtful accounts	(161)	418
Provision for warranties	11,723	12,436
Deferred compensation provision	(206)	(243)
Stock-based compensation	951	972
Tax benefit from stock incentive plans	(348)	(585)
Deferred income tax benefit	(3,959)	(4,124)
Gain on disposition of fixed assets	(234)	(164)
Distributions to SERP participants	(2,649)	0
Change in operating assets and liabilities:
(Purchase) sale of trading securities, net	(698)	(434)
Trade and other receivables	2,504	(8,432)
Inventories	3,628	(19,456)
Prepaid expenses	4,080	667
Other assets	(247)	(3,294)
Accounts payable	(14,581)	1,855
Accrued product warranty	(11,499)	(12,051)
Customer deposits	(12,523)	(1,178)
Prepaid and income taxes payable, net	(1,792)	250
Other	1,581	2,257
Net cash provided by operating activities	22,144	12,845
Cash flows from investing activities:
Expenditures for property and equipment	(15,483)	(18,445)
Business acquisition, net of cash acquired	178	(34,965)
Sale of investments	113	16,249
Proceeds from life insurance cash surrender value	416	0
Proceeds from sale of property and equipment	378	551
Net cash used by investing activities	(14,398)	(36,610)
Cash flows from financing activities:
Payment of dividends	(6,893)	(6,874)
Borrowings under bank loans	3,661	7,782
Repayments of bank loans	(3,507)	0
Tax benefit from stock issued under incentive plans	348	585
Sale (purchase) of Company shares held by SERP, net	2,053	(99)
Withholding tax paid upon vesting of restricted stock units	(600)	(953)
Proceeds from exercise of stock options	72	282
Sale (purchase) of subsidiaries shares to/from minority shareholders, net	(653)	1,585
Net cash provided (used) by financing activities	(5,519)	2,308
Effect of exchange rates on cash	(1,265)	(287)
Net increase (decrease) in cash and cash equivalents	962	(21,744)
Cash and cash equivalents, beginning of period	13,023	35,564
Cash and cash equivalents, end of period	$ 13,985	$ 13,820