Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Schedule of Financial Instruments Recognized at Fair Value on Recurring Basis

The following table presents information about financial instruments recognized at fair value on a recurring basis as of December 31, 2015 and 2014, and indicates the fair value hierarchy:

	December 31, 2015
(in thousands)	Level 1		Level 2		Level 3		Total
Assets
Short-term available-for-sale investments	$	226	$	-	$	-	$	226
Restricted cash		4,026		-		-		4,026
Total assets recorded at fair value	$	4,252	$	-	$	-	$	4,252

	December 31, 2014
	Level 1		Level 2		Level 3		Total
Assets
Restricted cash	$	3,941	$	-	$	-	$	3,941
Total assets recorded at fair value	$	3,941	$	-	$	-	$	3,941