Available-for-sale Securities, Amortized Cost Basis, and Cash and Cash Equivalents

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Cash, Cash Equivalents and Investments

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash and cash equivalents:
Cash and cash equivalents	$ 91,060	$ 85,586	$ 69,649	$ 2,925
Cash and Cash Equivalents, Fair Value Disclosure	91,060	85,586
Investments:
Investments, amortized cost	59,489	72,721
Investments, gross unrealized gains	1	2
Investments, gross unrealized losses	(180)	(109)
Investments, fair value	59,310	72,614
Total cash, cash equivalents, and investments, amortized cost	150,549	158,307
Total cash, cash equivalents, and investments, fair value	150,370	158,200
Certificates of deposit (due within 1 year)
Investments:
Investments, amortized cost	13,611	25,823
Investments, gross unrealized gains	1	0
Investments, gross unrealized losses	(7)	(9)
Investments, fair value	13,605	25,814
Certificates of deposit (due within 2 years)
Investments:
Investments, amortized cost	4,760	4,429
Investments, gross unrealized gains	0	1
Investments, gross unrealized losses	(10)	(3)
Investments, fair value	4,750	4,427
Commercial paper (due within 1 year)
Investments:
Investments, amortized cost	5,977	5,988
Investments, gross unrealized gains	0	1
Investments, gross unrealized losses	(11)	(3)
Investments, fair value	5,966	5,986
Corporate bonds (due within 1 year)
Investments:
Investments, amortized cost	24,002	16,487
Investments, gross unrealized gains	0	0
Investments, gross unrealized losses	(65)	(24)
Investments, fair value	23,937	16,463
Corporate bonds (due within 2 years)
Investments:
Investments, amortized cost	9,142	13,912
Investments, gross unrealized gains	0	0
Investments, gross unrealized losses	(84)	(64)
Investments, fair value	9,058	13,848
Government agencies (due within 1 year)
Investments:
Investments, amortized cost	1,997	6,082
Investments, gross unrealized gains	0	0
Investments, gross unrealized losses	(3)	(6)
Investments, fair value	1,994	6,076
Cash and money market accounts
Cash and cash equivalents:
Cash and cash equivalents	91,060	84,613
Cash and Cash Equivalents, Fair Value Disclosure	$ 91,060	84,613
Certificates of deposit
Cash and cash equivalents:
Cash and cash equivalents		472
Cash and Cash Equivalents, Fair Value Disclosure		472
Corporate bonds
Cash and cash equivalents:
Cash and cash equivalents		501
Cash and Cash Equivalents, Fair Value Disclosure		$ 501