Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Measurements [Abstract]

Assets Measured at Fair Value on a Recurring Basis

At December 31, 2016, we held $7.1 million of money market fund investments which are Level 1 investments and are considered cash equivalents. The following tables present the major security types we held at June 30, 2017, that are regularly measured and carried at fair value. The table segregates each security by the level within the fair value hierarchy of the valuation techniques we utilized to determine the respective securities’ fair value (in thousands):

	At June 30, 2017		Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)
Cash equivalents (1)	$	69,107	$	69,107	$	—
Corporate debt securities (2)		40,225		—		40,225
Other municipal debt securities (2)		2,998		—		2,998
Total	$	112,330	$	69,107	$	43,223

(1) Included in cash and cash equivalents on our condensed consolidated balance sheets.

(2) Included in short-term investments on our condensed consolidated balance sheets.