Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 29, 2012	Dec. 31, 2011
Stockholders' Equity and Redeemable Noncontrolling Interest
Beginning Balance, Common Stock, Value			$ 69
Beginning Balance, Common Stock, Shares			6,890,796
Beginning Balance, Additional Paid-in Capital			131,589
Beginning Balance, Retained Earnings			36,627
Beginning Balance, Accumulated Other Comprehensive Income			58
Beginning Balance			168,343
Stock option exercises			2,199
Share-based compensation			966
Net income	1,457	1,677	3,571	13,584
Net income	1,564	1,303	3,749	13,256
Other comprehensive loss			(6)
Ending Balance, Common Stock, Value	70		70
Ending Balance, Common Stock, Shares	6,967,954		6,967,954
Ending Balance, Additional Paid-in Capital	134,753		134,753
Ending Balance, Retained Earnings	40,198		40,198
Ending Balance, Accumulated Other Comprehensive Income	52		52
Ending Balance	175,073		175,073
Common Stock [Member]
Stockholders' Equity and Redeemable Noncontrolling Interest
Beginning Balance, Common Stock, Value			69
Beginning Balance, Common Stock, Shares			6,890,796
Stock option exercises, Shares			77,158
Stock option exercises			1
Ending Balance, Common Stock, Value	70		70
Ending Balance, Common Stock, Shares	6,967,954		6,967,954
Additional Paid-in Capital [Member]
Stockholders' Equity and Redeemable Noncontrolling Interest
Beginning Balance, Additional Paid-in Capital			131,589
Stock option exercises			2,198
Share-based compensation			966
Ending Balance, Additional Paid-in Capital	134,753		134,753
Retained Earnings [Member]
Stockholders' Equity and Redeemable Noncontrolling Interest
Beginning Balance, Retained Earnings			36,627
Net income			3,571
Ending Balance, Retained Earnings	40,198		40,198
Accumulated Other Comprehensive Income [Member]
Stockholders' Equity and Redeemable Noncontrolling Interest
Beginning Balance, Accumulated Other Comprehensive Income			58
Other comprehensive loss			(6)
Ending Balance, Accumulated Other Comprehensive Income	52		52
Redeemable Noncontrolling Interest [Member]
Stockholders' Equity and Redeemable Noncontrolling Interest
Beginning Balance			86,541
Stock option exercises
Share-based compensation
Net income			3,749
Other comprehensive loss			(6)
Ending Balance	$ 90,284		$ 90,284