SIGNIFICANT ACCOUNTING POLICIES AND RECENT ACCOUNTING STANDARDS (Tables)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Schedule of cash and cash equivalents

Cash, cash equivalents and restricted cash as presented on our condensed consolidated statements of cash flows consists of the following (in thousands):

	December 31,				June 30,
	2016		2017		2017		2018
Cash and cash equivalents	$	22,838	$	21,262	$	40,335	$	50,468
Restricted cash	130		—		—		20,000
Cash, cash equivalents and restricted cash	$	22,968	$	21,262	$	40,335	$	70,468

Schedule of restricted cash

Cash, cash equivalents and restricted cash as presented on our condensed consolidated statements of cash flows consists of the following (in thousands):

	December 31,				June 30,
	2016		2017		2017		2018
Cash and cash equivalents	$	22,838	$	21,262	$	40,335	$	50,468
Restricted cash	130		—		—		20,000
Cash, cash equivalents and restricted cash	$	22,968	$	21,262	$	40,335	$	70,468

Schedule of deferred costs

	Six Months Ended June 30,
	2017		2018
Beginning balance	$	—	$	3,144
Deferred costs	1,745		1,135
Recognized against offering proceeds	—		(4,279		)
Ending balance	$	1,745	$	—