Stock-Based Compensation Expense (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Based Compensation Expense Recognized in Accompanying Consolidated Statements of Operations

Total stock-based compensation expense recognized in the accompanying condensed consolidated statements of operations for the three and six months ended June 30, 2018 and 2017 are as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Stock-based compensation	$	2,209	$	1,250	$	4,152	$	2,516