Quarterly Financial Results (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Sep. 28, 2012	Sep. 29, 2011
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 277,563		$ 272,783		$ 276,594		$ 257,606		$ 292,827		$ 288,995		$ 291,180		$ 260,378		$ 1,084,546	[1]	$ 1,133,380	[1]	$ 1,063,289	[1]
Gross Profit	69,793		69,034		64,842		57,425		64,057		61,132		60,107		55,201
Operating income	37,366		43,193		40,928		33,446		36,023		37,855		37,967		31,476		154,933		143,321		111,313
Net income (loss) applicable to common shares	$ 16,485		$ 17,932		$ 3,895		$ (7,690)		$ 7,797		$ 17,549		$ 30,301		$ 19,373		$ 30,622		$ 75,020		$ 54,084
Per basic common share:
Net income applicable to common shares (in dollars per share)	$ 0.19	[2]	$ 0.21	[2]	$ 0.05	[2]	$ (0.09)	[2]	$ 0.09	[3]	$ 0.21	[3]	$ 0.36	[3]	$ 0.23	[3]	$ 0.35		$ 0.89		$ 0.65
Per diluted common share:
Net income applicable to common shares (in dollars per share)	$ 0.14	[2]	$ 0.21	[2]	$ 0.05	[2]	$ (0.10)	[2]	$ 0.09	[3]	$ 0.20	[3]	$ 0.33	[3]	$ 0.23	[3]	$ 0.35		$ 0.89		$ 0.64
Stock dividend paid																							5.00%	5.00%

[1] Revenues and cost of goods sold include federal excise taxes of $508,027, $552,965 and $538,328 for the years ended December 31, 2012, 2011 and 2010, respectively.

[2] Per share computations include the impact of a 5% stock dividend paid on September 28, 2012. Quarterly basic and diluted net income per common share were computed independently for each quarter and do not necessarily total to the year to date basic and diluted net income per common share.

[3] Per share computations include the impact of a 5% stock dividend paid on September 29, 2011. Quarterly basic and diluted net income per common share were computed independently for each quarter and do not necessarily total to the year to date basic and diluted net income per common share.