Investments in debt and equity securities (Tables)

6 Months Ended

Jun. 30, 2019

Investments, Debt and Equity Securities [Abstract]

Investments

The Company’s short-term and long-term debt and equity investments consist of the following:

	June 30, 2019						December 31, 2018
	Debt securities		Equity securities		Total		Debt securities		Equity securities		Total
Certificates of deposit and other time deposits	$	3,113	$	—	$	3,113	$	2,235	$	—	$	2,235
Investments in mutual funds and common stock	—		37,151		37,151		—		36,124		36,124
	$	3,113	$	37,151	$	40,264	$	2,235	$	36,124	$	38,359
Short-term investments	$	3,113	$	2,100	$	5,213	$	2,235	$	700	$	2,935
Long-term investments	—		35,051		35,051		—		35,424		35,424
	$	3,113	$	37,151	$	40,264	$	2,235	$	36,124	$	38,359