CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net earnings	$ 19,197	$ 8,603	$ 15,908
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	23,009	20,367	12,382
Stock-based compensation	2,815	2,717	1,879
Amortization of deferred financing costs	1,432	699	0
Deferred income taxes	(356)	(2,691)	(877)
Other, net	(1,419)	(3,651)	407
Changes in operating assets and liabilities:
Accounts receivable	12,187	1,382	(8,025)
Inventories	12,951	9,121	(6,538)
Other current assets	846	693	1,702
Other assets	2,161	(450)	(62)
Accounts payable	(10,022)	(3,890)	1,485
Accrued expenses	(3,154)	(10,170)	(7,670)
Other liabilities	(295)	423	165
Income taxes payable	6,437	(696)	(175)
Net cash provided by operating activities	65,789	22,457	10,581
Cash flows from investing activities:
Purchase of property, plant and equipment	(9,891)	(9,042)	(6,940)
Purchase of intangible asset	0	0	(1,336)
Purchase of marketable securities	0	(2,936)	0
Purchase of company-owned life insurance	(2,820)	(2,820)	(2,820)
Cash transferred from (to) restricted cash	0	0	12,993
Payments for acquisitions, net of cash acquired	0	(208,693)	(30,994)
Proceeds from cash surrender of COLI policies	0	5,756	0
Proceeds from sale of marketable securities	2,820	0	2,820
Proceeds from disposal/sale of property, plant and equipment	77	65	96
Net cash used in investing activities	(9,814)	(217,670)	(26,181)
Cash flows from financing activities:
Dividends paid to common shareholders	(3,238)	(3,160)	(3,111)
Deferred financing costs	(15)	(5,756)	0
Borrowings under revolving credit line	12,500	23,000	12,000
Repayments under revolving credit line	(35,500)	(12,000)	0
(Reduction) increase in notes payable	(123)	(161)	506
Proceeds from long-term debt	0	215,000	0
Repayments of long-term debt	(22,438)	(5,375)	0
Purchase and retirement of Class B common stock	0	0	(3,356)
Net cash (used in) provided by financing activities	(48,814)	211,548	6,039
Effect of exchange rate changes on cash	741	(1,320)	422
Net increase (decrease) in cash and cash equivalents	7,902	15,015	(9,139)
Cash and cash equivalents - beginning of year	77,138	62,123	71,262
Cash and cash equivalents - end of year	85,040	77,138	62,123
Cash paid (received) during the year for:
Income taxes, net of refunds received	580	4,686	(474)
Interest payments	6,153	3,210	156
Details of acquisition (see Note 2):
Fair value of identifiable net assets acquired	0	130,747	34,541
Goodwill	0	105,402	4,812
Fair value of net assets acquired	0	236,149	39,353
Fair value of consideration transferred	0	236,149	39,353
Less: Cash acquired in acquisition	0	(27,456)	(8,359)
Cash paid for acquisition, net of cash acquired	$ 0	$ 208,693	$ 30,994