Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation Expense

Stock-based compensation expense was recognized in the Consolidated Statements of Operations as follows:   

	Three months ended June 30,				Six months ended June 30,
	2017		2016		2017		2016
	(Unaudited - In thousands)
General and administrative expense	$	351	$	467	$	246	$	1,275
	$	351	$	467	$	246	$	1,275

Types of Vesting Schedules

At June 30, 2017, the Company had outstanding options that vest based on two different types of vesting schedules:

1)	performance-based;
2)	service-based.