Stockholders Equity (detail) (USD $)				3 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jul. 02, 2011	Jun. 30, 2012 Treasury Stock [Member]	Jun. 30, 2012 Common Stock [Member]
Stock Issued For Bonus Program Value					$ 29,000
Stock Issued For Bonus Program Shares					1,330
Treasury Stock, Value, Acquired, Cost Method				445,000
Stock Repurchased During Period, Shares				17,695
Treasury Stock, at cost	$ 1,880,000	$ 1,435,000	$ 257,000	$ 1,880,000
Shares, Issued				82,528