Equity Method Investments (Detail) - Condensed Financial Information of the Company's Non-Consolidated Equity Method Investment in ICP (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
ICP’s Operating results:
Net sales	$ 61,377	[1]	$ 58,938	[1]	$ 94,227	[1]	$ 116,991	[1]
Cost of sales and expenses	(61,034)	[2]	(59,307)	[2]	(97,114)	[2]	(116,232)	[2]
Net income (loss)	$ 343		$ (369)		$ (2,887)		$ 759

[1] Includes related party sales to MGPI of $741 and $14,638 for the quarters ended June 30, 2013 and 2012, respectively, and $3,400 and $30,633 for the year to date periods ended June 30, 2013 and 2012, respectively.

[2] Includes depreciation and amortization of $1,170 and $1,259 for the quarters ended June 30, 2013 and 2012, respectively and $2,340 and $2,519 for the year to date periods ended June 30, 2013 and 2012, respectively.