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 July 29, 2017, 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 July 29, 2017, and April 29, 2017:

(Unaudited, amounts in thousands)	7/29/17		4/29/17
Short-term investments:
Available-for-sale investments	$	14,788	$	15,040
Trading securities	21		6
Held-to-maturity investments	1,934		1,867

Total short-term investments	16,743		16,913

Long-term investments:
Available-for-sale investments	30,626		31,264
Cost basis investment	10,954		5,500

Total long-term investments	41,580		36,764


Total investments	$	58,323	$	53,677


Investments to enhance returns on cash	$	33,427	$	33,087
Investments to fund compensation/retirement plans	$	13,942	$	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 July 29, 2017, and April 29, 2017:

At July 29, 2017

(Unaudited, amounts in thousands)	Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Equity securities	$	1,912	$	(39	)	$	18,677
Fixed income	75		(57		)	36,205
Mutual funds	—		—			21
Other	34		—			3,420

Total securities	$	2,021	$	(96	)	$	58,323

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
(Unaudited, amounts in thousands)	7/29/17			7/30/16
Proceeds from sales	$	5,857		$	3,670
Gross realized gains	402			31
Gross realized losses	(221		)	(36		)

The fair value of fixed income available-for-sale securities by contractual maturity was $15.0 million within one year, $19.5 million within two to five years, $1.3 million within six to ten years, and $0.4 million thereafter.