Cash, Cash Equivalents and Investments (Tables)

12 Months Ended

Dec. 29, 2012

Cash, Cash Equivalents and Investments

Schedule of cash, cash equivalents, and investments

	December 29, 2012
	Cost		Gross Unrealized Losses			Gross Unrealized Gains		Fair Value
Cash and Cash Equivalents:
Cash on hand	$	56,690	$	—		$	—	$	56,690
Available-for-sale securities:
U.S. Treasury bills		25,049		—			1		25,050
Money market funds		22,685		—			1		22,686
Municipal bonds		1,000		—			—		1,000
Total available-for-sale securities		48,734		—			2		48,736
Total cash and cash equivalents	$	105,424	$	—		$	2	$	105,426
Short-term Investments:
Available-for-sale securities:
Corporate bonds	$	59,089	$	(5	)	$	267	$	59,351
Municipal bonds		45,646		(7	)		50		45,689
Variable-rate demand notes		41,785		—			—		41,785
Asset-backed securities		15,058		—			11		15,069
U.S. government bonds		12,638		—			25		12,663
International government bonds		1,991		—			17		2,008
Total short-term investments	$	176,207	$	(12	)	$	370	$	176,565
Long-term Investments:
Available-for-sale securities:
Auction rate securities	$	12,525	$	(1,156	)	$	—	$	11,369
Total long-term investments	$	12,525	$	(1,156	)	$	—	$	11,369

	December 31, 2011
	Cost		Gross Unrealized Losses			Gross Unrealized Gains		Fair Value
Cash and Cash Equivalents:
Cash on hand	$	44,113	$	—		$	—	$	44,113
Available-for-sale securities:
Money market funds		50,851		—			—		50,851
Total cash and cash equivalents	$	94,964	$	—		$	—	$	94,964
Short-term Investments:
Available-for-sale securities:
Corporate bonds	$	75,189	$	(363	)	$	234	$	75,060
Municipal bonds		56,915		(12	)		81		56,984
Variable-rate demand notes		41,280		—			—		41,280
U.S. government agency		19,820		(12	)		28		19,836
U.S. Treasury bills		8,600		—			—		8,600
Asset-backed securities		5,743		(5	)		1		5,739
U.S. government bonds		2,507		—			—		2,507
Certificates of deposit		1,570		—			—		1,570
International government bonds		950		—			—		950
Total short-term investments	$	212,574	$	(392	)	$	344	$	212,526
Long-term Investments:
Available-for-sale securities:
Auction rate securities	$	19,225	$	(1,748	)	$	—	$	17,477
Total long-term investments	$	19,225	$	(1,748	)	$	—	$	17,477

Schedule of available-for-sale investments in continuous unrealized loss position by length of time

	Less Than 12 Months					12 Months or Greater					Total
As of December 29, 2012	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Municipal bonds	$	17,152	$	(7	)	$	—	$	—		$	17,152	$	(7	)
Auction rate securities		—		—			11,369		(1,156	)		11,369		(1,156	)
Corporate bonds		9,543		(5	)		—		—			9,543		(5	)
	$	26,695	$	(12	)	$	11,369	$	(1,156	)	$	38,064	$	(1,168	)

	Less Than 12 Months					12 Months or Greater					Total
As of December 31, 2011	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Corporate bonds	$	25,438	$	(363	)	$	—	$	—		$	25,438	$	(363	)
Auction rate securities		—		—			17,477		(1,748	)		17,477		(1,748	)
Municipal bonds		10,437		(12	)		—		—			10,437		(12	)
U.S. government agency		5,772		(12	)		—		—			5,772		(12	)
Asset-backed securities		4,539		(5	)		—		—			4,539		(5	)
	$	46,186	$	(392	)	$	17,477	$	(1,748	)	$	63,663	$	(2,140	)

Summarization of contractual underlying maturities of available-for-sale investments

	Cost		Fair Value
Due in one year or less	$	93,389	$	93,450
Due after one year through ten years		95,117		95,416
Due after ten years		48,960		47,804
	$	237,466	$	236,670