Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Cash flows (used in) provided by operating activities:
Net income	$ 6,912	$ 7,493
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	5,098	4,731
Loss on disposal of property, plant and equipment	345	20
Bad debt expense	31	24
Stock-based compensation expense	1,537	1,385
Excess tax benefit from stock-based compensation arrangements	(4,337)	(3,566)
Deferred income tax	(208)
Changes in operating assets and liabilities:
Accounts receivable	1,184	(1,592)
Inventories	(7,350)	(4,058)
Prepaid expenses and other assets	(5,995)	(135)
Accounts payable	(630)	3,691
Accrued expenses and other current liabilities	(9,257)	(6,163)
Other liabilities	(161)	(77)
Net cash (used in) provided by operating activities	(12,831)	1,753
Cash flows used in investing activities:
Purchases of property, plant and equipment	(21,177)	(13,518)
Cash paid for acquisition of brewery assets and other intangible assets		(1,477)
Decrease in restricted cash	62
Net cash used in investing activities	(21,115)	(14,995)
Cash flows (used in) provided by financing activities:
Repurchase of Class A Common Stock	(14,697)	(3,731)
Proceeds from exercise of stock options	1,844	1,883
Cash paid on note payable	(62)
Excess tax benefit from stock-based compensation arrangements	4,337	3,566
Net proceeds from sale of investment shares	355	235
Net cash (used in) provided by financing activities	(8,223)	1,953
Change in cash and cash equivalents	(42,169)	(11,289)
Cash and cash equivalents at beginning of period	74,463	49,450
Cash and cash equivalents at end of period	32,294	38,161
Supplemental disclosure of cash flow information:
Income taxes paid	4,289	1,208
Acquisition of property and equipment under capital lease	231
Allocation of purchase consideration to brewery acquisition to the following assets:
Property, plant and equipment		337
Trade name		400
Goodwill		$ 1,163