Cash and cash equivalents (Tables)

3 Months Ended

Mar. 31, 2018

Cash and Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents

(in thousands)	MARCH 31, 2018		DECEMBER 31, 2017
Cash	$	39,311	$	12,583
Cash equivalents		27,299		39,449
	$	66,610	$	52,032