CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 10,487	$ 4,177
Trade receivables — net of allowance for uncollectible accounts — 2016 — $1,498 and 2015 — $1,297	76,792	70,292
Employee receivables	165	217
Other receivables	4,742	6,799
Inventories	109,858	105,999
Prepaid expenses	7,829	5,634
Prepaid income taxes	3,044	2,955
Deferred income tax assets	7,017	7,025
Income tax refund receivables	43	905
Total current assets	219,977	204,003
PROPERTY AND EQUIPMENT:
Land and land improvements	19,400	19,307
Buildings	139,140	136,595
Manufacturing equipment	166,034	158,775
Furniture and fixtures	42,478	39,301
Leasehold improvements	29,267	27,561
Construction-in-progress	31,795	26,292
Total property and equipment	428,114	407,831
Less accumulated depreciation	(151,628)	(140,053)
Property and equipment — net	276,486	267,778
OTHER ASSETS:
Goodwill	187,034	184,472
Other assets	14,770	13,121
Total other assets	318,502	306,947
TOTAL	814,965	778,728
CURRENT LIABILITIES:
Trade payables	31,286	37,977
Accrued expenses	40,196	37,846
Current portion of long-term debt	10,000	10,000
Advances from employees	473	589
Income taxes payable	3,138	1,498
Total current liabilities	85,093	87,910
LONG-TERM DEBT	221,719	197,593
DEFERRED INCOME TAX LIABILITIES	11,024	10,985
LIABILITIES RELATED TO UNRECOGNIZED TAX BENEFITS	768	768
DEFERRED COMPENSATION PAYABLE	9,103	8,500
DEFERRED CREDITS	2,635	2,721
OTHER LONG-TERM OBLIGATIONS	4,633	4,148
Total liabilities	334,975	312,625
COMMITMENTS AND CONTINGENCIES (Notes 5, 9, 10, and 13)
STOCKHOLDERS’ EQUITY:
Preferred stock — 5,000 shares authorized as of June 30, 2016 and December 31, 2015; no shares issued
Common stock, no par value; shares authorized — 100,000; issued and outstanding as of June 30, 2016 - 44,318 and December 31, 2015 - 44,267	200,015	197,826
Retained earnings	285,405	273,764
Accumulated other comprehensive loss	(5,430)	(5,487)
Total stockholders’ equity	479,990	466,103
TOTAL	814,965	778,728
Developed technology — net of accumulated amortization — 2016 — $44,401 and 2015 — $38,497
OTHER ASSETS:
Intangible Assets	76,111	69,861
Other — net of accumulated amortization — 2016 — $28,569 and 2015 — $26,603
OTHER ASSETS:
Intangible Assets	$ 40,587	$ 39,493