Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended		6 Months Ended
	Jul. 22, 2013	Sep. 28, 2013	Sep. 30, 2012	Sep. 28, 2013	Sep. 30, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, common stock, shares				6,967,954
Beginning balance				$ 176,890
Stock option exercises, shares	1,867,370
Stock option exercises, amount				50
Stock-based compensation				1,937
Net income		4,310	1,254	6,136	2,114
Other comprehensive loss				(111)
Ending balance, common stock, shares		8,837,324		8,837,324
Ending balance		279,288		279,288
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward]
Redeemable noncontrolling interest, beginning balance				91,994
Net income		433	1,427	2,468	2,185
Other comprehensive loss				(76)
Redeemable noncontrolling interest, ending balance		0		0
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests				94,386
Pre-tax unrealized loss on available-for-sale investments				(284)
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, common stock, shares				6,967,954
Beginning balance				70
Stock option exercises, shares				2,000
Stock option exercises, amount				0
Stock-based compensation				0
Net income				0
Other comprehensive loss				0
Ending balance, common stock, shares		8,837,324		8,837,324
Ending balance		88		88
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward]
Stock Issued During Period, Shares, Acquisitions				1,867,370
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests				18
Additional paid-in capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance				135,053
Stock option exercises, amount				50
Stock-based compensation				1,937
Net income				0
Other comprehensive loss				0
Ending balance		231,307		231,307
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests				94,267
Retained earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance				41,590
Stock option exercises, amount				0
Stock-based compensation				0
Net income				6,136
Other comprehensive loss				0
Ending balance		47,726		47,726
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests				0
Accumulated other comprehensive income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance				177
Stock option exercises, amount				0
Stock-based compensation				0
Net income				0
Other comprehensive loss				(111)
Ending balance		167		167
Increase (Decrease) in Redeemable Noncontrolling Interest [Roll Forward]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests				$ 101