Income Taxes (Details) (USD $)	3 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Mar. 31, 2012
Income Taxes [Abstract]
(Benefit from) provision for income taxes	$ 229,000	$ 700,000
Income before provision for income taxes	826,000	2,369,000
Effective income tax rate	28.00%	30.00%
Unrecognized tax benefits	3,664,000		3,661,000
Unrecognized tax benefits that would affect income tax rate	2,847,000
Accrued income tax interest	478,000
Accrued income tax penalties	152,000
Income tax interest	16,000
Income tax penalties	1,000
Unrecognized tax benefits reasonably possible to expire in the next twelve months	$ 1,706,000