CONSOLIDATED CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016	Mar. 26, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 31,020	$ 34,091	$ 43,065
Restricted cash and cash equivalents	909	398	1,139
Investments	5,928	10,348	6,737
Accounts receivable, net	365,620	282,253	287,374
Inventories:
Raw materials	232,647	198,954	176,983
Finished goods	239,369	198,273	150,194
Total inventories	472,016	397,227	327,177
Refundable income taxes	3,170	11,459
Other current assets	20,650	20,662	16,889
TOTAL CURRENT ASSETS	899,313	756,438	682,381
RESTRICTED CASH	3,800
DEFERRED INCOME TAXES	1,960	1,546	2,664
OTHER ASSETS	12,573	8,617	7,760
GOODWILL	211,061	198,535	181,280
INDEFINITE-LIVED INTANGIBLE ASSETS	2,340	2,340	2,340
OTHER INTANGIBLE ASSETS, NET	36,759	26,731	14,718
PROPERTY, PLANT AND EQUIPMENT:
Property, plant and equipment	720,912	699,462	639,881
Less accumulated depreciation and amortization	(411,059)	(401,611)	(385,247)
PROPERTY, PLANT AND EQUIPMENT, NET	309,853	297,851	254,634
TOTAL ASSETS	1,477,659	1,292,058	1,145,777
CURRENT LIABILITIES:
Cash overdraft	21,566	19,761
Accounts payable	156,030	124,660	116,525
Accrued liabilities:
Compensation and benefits	58,491	92,441	61,314
Income taxes			7,182
Other	39,473	32,281	29,414
Current portion of long-term debt	2,280	2,634	886
TOTAL CURRENT LIABILITIES	277,840	271,777	215,321
LONG-TERM DEBT	252,904	109,059	84,525
DEFERRED INCOME TAXES	21,364	20,817	24,991
OTHER LIABILITIES	28,198	29,939	26,012
TOTAL LIABILITIES	580,306	431,592	350,849
Controlling interest shareholders' equity:
Preferred stock, no par value; shares authorized 1,000,000; issued and outstanding, none
Common stock, no par value; shares authorized 80,000,000; issued and outstanding, 20,518,049, 20,342,069, and 20,301,084	20,518	20,342	20,301
Additional paid-in capital	197,356	185,333	180,395
Retained earnings	670,115	649,135	584,848
Accumulated other comprehensive income	(3,450)	(5,630)	(3,946)
Total controlling interest shareholders' equity	884,539	849,180	781,598
Noncontrolling interest	12,814	11,286	13,330
TOTAL SHAREHOLDERS' EQUITY	897,353	860,466	794,928
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,477,659	$ 1,292,058	$ 1,145,777