CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 9,401	$ 7,459
Trade receivables — net of allowance for uncollectible accounts — 2014 — $903 and 2013 — $840	67,345	60,186
Employee receivables	180	224
Other receivables	4,033	3,279
Inventories	86,471	82,378
Prepaid expenses	5,477	5,121
Prepaid income taxes	1,230	1,232
Deferred income tax assets	5,619	5,638
Income tax refund receivables	297	398
Total current assets	180,053	165,915
PROPERTY AND EQUIPMENT:
Land and land improvements	17,214	16,240
Buildings	129,967	127,747
Manufacturing equipment	145,473	136,768
Furniture and fixtures	35,166	32,327
Leasehold improvements	14,651	13,692
Construction-in-progress	26,911	25,172
Total property and equipment	369,382	351,946
Less accumulated depreciation	(118,509)	(108,676)
Property and equipment — net	250,873	243,270
OTHER ASSETS:
Goodwill	184,505	184,505
Deferred income tax assets	800	800
Other assets	14,544	13,806
Total other assets	313,194	319,098
TOTAL	744,120	728,283
CURRENT LIABILITIES:
Trade payables	28,180	26,511
Accrued expenses	31,141	27,702
Current portion of long-term debt	10,000	10,000
Advances from employees	660	292
Income taxes payable	1,161	1,089
Total current liabilities	71,142	65,594
LONG-TERM DEBT	238,375	238,854
DEFERRED INCOME TAX LIABILITIES	2,533	2,548
LIABILITIES RELATED TO UNRECOGNIZED TAX BENEFITS	1,767	2,031
DEFERRED COMPENSATION PAYABLE	8,365	7,833
DEFERRED CREDITS	2,977	3,065
OTHER LONG-TERM OBLIGATIONS	3,060	2,652
Total liabilities	328,219	322,577
COMMITMENTS AND CONTINGENCIES (Notes 5, 9, 10 and 13)
STOCKHOLDERS’ EQUITY:
Preferred stock — 5,000 shares authorized as of June 30, 2014 and December 31, 2013; no shares issued	0	0
Common stock, no par value; 100,000 shares authorized; 43,223 and 42,846 shares issued at June 30, 2014 and December 31, 2013, respectively	181,983	177,775
Retained earnings	233,527	226,988
Accumulated other comprehensive income	391	943
Total stockholders’ equity	415,901	405,706
TOTAL	744,120	728,283
Developed technology — net of accumulated amortization — 2014 — $22,862 and 2013 — $17,602
OTHER ASSETS:
Intangible Assets	85,763	91,052
Other — net of accumulated amortization — 2014 — $21,021 and 2013 — $18,870
OTHER ASSETS:
Intangible Assets	$ 27,582	$ 28,935