Subsequent Events (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended		6 Months Ended		6 Months Ended			6 Months Ended
	Aug. 24, 2012	Aug. 24, 2011 Line of Credit [Member]	Aug. 24, 2012 Subsequent Event [Member]	Sep. 28, 2012 Subsequent Event [Member]	Aug. 24, 2012 Subsequent Event [Member] Repurchase of Equity [Member]	Aug. 24, 2012 Subsequent Event [Member] Line of Credit [Member]	Sep. 28, 2012 Subsequent Event [Member] Line of Credit [Member]	Aug. 24, 2012 Subsequent Event [Member] Term Loan [Member]	Sep. 28, 2012 Subsequent Event [Member] Term Loan [Member]
Subsequent Event [Line Items]
Annual payment reductions for dividends and interest			$ 1,500
Reduction of Common Stock and Common Stock equivalents (in shares)			5,032,091
Line of credit amount		20,000					15,000		15,000
Expiration date						Oct. 31, 2015		Sep. 28, 2017
Term loan period								5 years
Proceeds used to retire shares of 10% Preferred Stock					$ 10,000
Number of preferred shares retired					10,000
Preferred stock, number of shares of convertible to ETC Common Stock			5,032,091
Initial personal guarantee period				30 months
Series E Preferred Stock dividend	10.00%		8.00%