Stockholders' Equity (Details 3) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 01, 2012
Stock options
Other Disclosures
Number of option holders	17
Vested Options
Options Outstanding
Outstanding at the end of the period (in shares)	81,135
Weighted Average Exercise Price (in dollars per share)	$ 30.19
Weighted Average Remaining Contractual Life	4 years 7 months 6 days
Total Intrinsic Value (in dollars)	$ 132
Total Grant Date Fair Value (in dollars)	1,117
Vested Options | Range of exercise price from $11.00-$12.00
Information by range of exercise prices for options
Low end of range of exercise prices (in dollars per share)	$ 11.00
High end of range of exercise prices (in dollars per share)	$ 12.00
Options Outstanding
Outstanding at the end of the period (in shares)	6,776
Weighted Average Exercise Price (in dollars per share)	$ 11.81
Weighted Average Remaining Contractual Life	8 months 12 days
Total Intrinsic Value (in dollars)	112
Total Grant Date Fair Value (in dollars)	35
Vested Options | Range of exercise price from $24.00-$32.00
Information by range of exercise prices for options
Low end of range of exercise prices (in dollars per share)	$ 24.00
High end of range of exercise prices (in dollars per share)	$ 32.00
Options Outstanding
Outstanding at the end of the period (in shares)	29,260
Weighted Average Exercise Price (in dollars per share)	$ 28.74
Weighted Average Remaining Contractual Life	4 years
Total Intrinsic Value (in dollars)	20
Total Grant Date Fair Value (in dollars)	413
Vested Options | Range of exercise price from $33.00-$39.00
Information by range of exercise prices for options
Low end of range of exercise prices (in dollars per share)	$ 33.00
High end of range of exercise prices (in dollars per share)	$ 39.00
Options Outstanding
Outstanding at the end of the period (in shares)	45,099
Weighted Average Exercise Price (in dollars per share)	$ 33.89
Weighted Average Remaining Contractual Life	5 years 7 months 6 days
Total Grant Date Fair Value (in dollars)	669
Nonvested Options
Options Outstanding
Outstanding at the end of the period (in shares)	163,390
Weighted Average Exercise Price (in dollars per share)	$ 29.84
Weighted Average Remaining Contractual Life	7 years 9 months 18 days
Total Intrinsic Value (in dollars)	36
Total Grant Date Fair Value (in dollars)	2,097
Nonvested Options | Range of exercise price from $23.00-$30.00
Information by range of exercise prices for options
Low end of range of exercise prices (in dollars per share)	$ 23.00
High end of range of exercise prices (in dollars per share)	$ 30.00
Options Outstanding
Outstanding at the end of the period (in shares)	115,056
Weighted Average Exercise Price (in dollars per share)	$ 28.41
Weighted Average Remaining Contractual Life	8 years 6 months
Total Intrinsic Value (in dollars)	36
Total Grant Date Fair Value (in dollars)	1,429
Nonvested Options | Range of exercise price from $33.00-$35.00
Information by range of exercise prices for options
Low end of range of exercise prices (in dollars per share)	$ 33.00
High end of range of exercise prices (in dollars per share)	$ 35.00
Options Outstanding
Outstanding at the end of the period (in shares)	48,334
Weighted Average Exercise Price (in dollars per share)	$ 33.24
Weighted Average Remaining Contractual Life	6 years 2 months 12 days
Total Grant Date Fair Value (in dollars)	$ 668