Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 50,287	$ 208,747
Accounts receivable, net of allowance for doubtful accounts of $288 and $115 at December 31, 2014 and 2013, respectively	71,982	39,386
Inventories	49,623	24,824
Prepaid expenses	4,545	2,580
Prepaid income taxes	0	899
Deferred income taxes	1,390	893
Other current assets	3,475	445
Total current assets	181,302	277,774
Property, plant and equipment, net	131,588	54,916
Goodwill	383,646	28,515
Intangible assets with finite lives, net	160,394	15,126
Other assets	4,341	541
Total assets	861,271	376,872
Current liabilities:
Trade accounts payable	24,352	12,395
Accrued expenses	15,614	10,732
Accrued compensation and other benefits	9,137	4,770
Dividends payable	9,251	7,856
Income taxes payable	2,168	0
Current portion of long-term debt	35,000	0
Total current liabilities	95,522	35,753
Long-term debt	297,500	0
Deferred income taxes	70,401	5,884
Other long-term obligations	5,950	3,877
Total liabilities	469,373	45,514
Commitments and contingencies (note 11)
Stockholders' equity:
Preferred stock, $25 par value. Authorized 2,000,000 shares; none issued and outstanding	0	0
Common stock, $.0667 par value. Authorized 60,000,000 shares; 30,845,586 shares issued and outstanding at December 31, 2014 and 30,225,763 shares issued and outstanding at December 31, 2013	2,058	2,016
Additional paid-in capital	97,289	77,517
Retained earnings	295,202	251,627
Accumulated other comprehensive income (loss)	(2,651)	198
Treasury stock, at cost: 0 and 0 shares at December 31, 2014 and 2013, respectively	0	0
Total stockholders' equity	391,898	331,358
Total liabilities and stockholders' equity	$ 861,271	$ 376,872