Note 5. Investments

ARRIS’s investments consisted of the following (in thousands):


	As of June 30, 2017		As of December 31, 2016
Current Assets:
Available-for-sale securities	$	38,759	$	115,553
Noncurrent Assets:
Available-for-sale securities		5,304		15,391
Equity method investments		22,216		22,688
Cost method investments		4,092		6,841
Other investments		29,435		28,012

Total classified as non-current assets		61,047		72,932

Total	$	99,806	$	188,485

Available-for-sale securities—ARRIS’s investments in debt and marketable equity securities are categorized as available-for-sale and are carried at fair value. Realized gains and losses on available-for-sale securities are included in net income. Unrealized gains and losses on available-for-sale securities are included in the Consolidated Balance Sheets as a component of accumulated other comprehensive income (loss).

The amortized costs and fair value of available-for-sale securities were as follows (in thousands):


	June 30, 2017									December 31, 2016
	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Certificates of deposit (foreign)	$	12,644	$	—	$	—		$	12,644	$	87,372	$	—	$	—		$	87,372
Corporate bonds		26,096		21		(5	)		26,112		34,175		35		(77	)		34,133
Short-term bond fund		—		—		—			—		5,046		69		(69	)		5,046
Corporate obligations		4		—		—			4		3		—		—			3
Money markets		54		—		—			54		54		—		—			54
Mutual funds		108		3		—			111		94		28		(21	)		101
Other investments		4,993		145		—			5,138		4,192		530		(487	)		4,235

Total	$	43,899	$	169	$	(5	)	$	44,063	$	130,936	$	662	$	(654	)	$	130,944

The following table represents the breakdown of the available-for-sale investments with gross unrealized losses and the duration that those losses had been unrealized (in thousands):


	June 30, 2017
	Less than 12 months					12 months or more				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Certificates of deposit (foreign)	$	12,644	$	—		$	—	$	—	$	12,644	$	—
Corporate bonds		26,112		(5	)		—		—		26,112		(5	)
Short-term bond fund		—		—			—		—		—		—
Corporate obligations		4		—			—		—		4		—
Money markets		54		—			—		—		54		—
Mutual funds		111		—			—		—		111		—
Other investments		5,138		—			—		—		5,138		—

Total	$	44,063	$	(5	)	$	—	$	—	$	44,063	$	(5	)


	December 31, 2016
	Less than 12 months					12 months or more				Total
	Fair value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Certificates of deposit (foreign)	$	87,372	$	—		$	—	$	—	$	87,372	$	—
Corporate bonds		34,133		(77	)		—		—		34,133		(77	)
Short-term bond fund		5,046		(69	)		—		—		5,046		(69	)
Corporate obligations		3		—			—		—		3		—
Money markets		54		—			—		—		54		—
Mutual funds		101		(21	)		—		—		101		(21	)
Other investments		4,235		(487	)		—		—		4,235		(487	)

Total	$	130,944	$	(654	)	$	—	$	—	$	130,944	$	(654	)

As of June 30, 2017, for fixed income securities that were in unrealized loss positions, the Company has determined that (i) it does not have the intent to sell any of these investments, and (ii) it is more likely than not that it will not be required to sell any of these investments before recovery of the entire amortized cost basis.

The sale and/or maturity of available-for-sale securities resulted in the following activity (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
Proceeds from sales	$	58,416	$	348	$	150,301	$	2,442
Gross gains		2		—		12		26
Gross losses		—		—		—		—

The contractual maturities of the Company’s available-for-sale securities are shown below. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties (in thousands):


	June 30, 2017
	Amortized Cost		Fair Value
Within 1 year	$	38,744	$	38,759
After 1 year through 5 years		—		—
After 5 year through 10 years		—		—
After 10 years		5,155		5,304

Total	$	43,899	$	44,063

Other-than-temporary investment impairments—In making this determination, ARRIS evaluates its investments for any other-than-temporary impairment on a quarterly basis considering all available evidence, including changes in general market conditions, specific industry and individual entity data, the financial condition and the near-term prospects of the entity issuing the security, and the Company’s ability and intent to hold the investment until recovery. For the six months ended June 30, 2017, ARRIS concluded that one private company had indicators of impairment, as the cost basis exceeded the fair value of the investment, resulting in an other-than-temporary impairment charge of $2.8 million. For the year ended December 31, 2016, the Company concluded that two private companies had indicators of impairment, as the cost basis exceeded the fair value of the investments, resulting in an other-than-temporary impairment charges of $12.3 million. These charges are reflected in the Consolidated Statements of Operations.

Classification of securities as current or noncurrent is dependent upon management’s intended holding period, the security’s maturity date and liquidity consideration based on market conditions. If management intends to hold the securities for longer than one year as of the balance sheet date, they are classified as noncurrent.