Note 6: Investments

We have current and long-term investments intended to enhance returns on our cash as well as to fund future obligations of our non-qualified defined benefit retirement plan, our executive deferred compensation plan, and our performance compensation retirement plan. We also hold other investments, which at January 27, 2018, included cost-basis preferred shares of two privately-held companies, and at April 29, 2017, included an available-for-sale convertible debt security and cost-basis preferred shares of a privately-held company. Our short-term investments are included in other current assets and our long-term investments are included in other long-term assets on our consolidated balance sheet.

The following summarizes our investments at January 27, 2018, and April 29, 2017:

(Unaudited, amounts in thousands)	1/27/18		4/29/17
Short-term investments:
Available-for-sale investments	$	12,737	$	15,040
Trading securities	12		6
Held-to-maturity investments	3,358		1,867

Total short-term investments	16,107		16,913

Long-term investments:
Available-for-sale investments	33,983		31,264
Cost basis investments	10,954		5,500

Total long-term investments	44,937		36,764


Total investments	$	61,044	$	53,677


Investments to enhance returns on cash	$	35,401	$	33,087
Investments to fund compensation/retirement plans	$	14,689	$	13,690
Other investments	$	10,954	$	6,900

The following is a summary of the unrealized gains, unrealized losses, and fair value by investment type at January 27, 2018, and April 29, 2017:

At January 27, 2018

(Unaudited, amounts in thousands)	Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Equity securities	$	2,565	$	(25	)	$	19,094
Fixed income	38		(309		)	37,479
Mutual funds	—		—			12
Other	77		—			4,459

Total securities	$	2,680	$	(334	)	$	61,044

At April 29, 2017

(Unaudited, amounts in thousands)	Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Equity securities	$	1,796	$	(83	)	$	13,610
Fixed income	729		(72		)	37,580
Mutual funds	—		—			6
Other	1		(8		)	2,481

Total securities	$	2,526	$	(163	)	$	53,677

The following table summarizes sales of available-for-sale securities:

	Quarter Ended						Nine Months Ended
(Unaudited, amounts in thousands)	1/27/18			1/28/17			1/27/18			1/28/17
Proceeds from sales	$	5,580		$	4,142		$	17,109		$	13,899
Gross realized gains	870			866			1,288			913
Gross realized losses	(284		)	(366		)	(512		)	(404		)

The fair value of fixed income available-for-sale securities by contractual maturity was $12.8 million within one year, $22.5 million within two to five years, $1.5 million within six to ten years, and $0.7 million thereafter.