Cash and Available-for-Sale Securities

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Cash and Available-for-Sale Securities

Cash and Available-for-Sale Securities

Cash, cash equivalents and investments consisted of the following (in thousands):

	September 30, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Cash and Cash Equivalents		Investments
Cash	$	122,154	$	—	$	—	$	122,154	$	122,154	$	—
Time deposits	220,000		—		—		220,000		20,000		200,000
Money market funds	110,461		—		—		110,461		110,461		—
Totals	$	452,615	$	—	$	—	$	452,615	$	252,615	$	200,000
	December 31, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Cash and Cash Equivalents		Investments
Cash	$	215,963	$	—	$	—	$	215,963	$	215,963	$	—
Time deposits	210,000		—		—		210,000		150,000		60,000
Totals	$	425,963	$	—	$	—	$	425,963	$	365,963	$	60,000

Cash equivalents and investments are considered available-for-sale securities. We use the specific-identification method for calculating realized gains and losses on securities sold and include them in interest expense, net in the condensed consolidated statements of income. Our investments balance represents time deposits with original maturities of greater than three months.