Cash and Cash Equivalents

12 Months Ended

Dec. 31, 2016

4. Cash and Cash Equivalents

The following is a summary of cash and cash equivalents at December 31, 2015 and 2016 (in thousands):

	December 31,
	2015			2016
Cash		$	8,487		$	5,332
Investments with original maturity of less than three months at the time of purchase			11,953			11,188
Total cash and cash equivalents		$	20,440		$	16,520

Investments with original maturity of less than three months at time of purchase are made up of money market funds and commercial paper.

- Definition

The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) 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. Generally, only investments maturing within three months from the date of acquisition qualify.

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