Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Carried at Fair Value on a Recurring Basis

Financial assets and liabilities carried at fair value on a recurring basis were as follows (in thousands):

	Balance at December 31, 2015
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents (1)	$	5,007	$	—	$	—	$	5,007
	$	5,007	$	—	$	—	$	5,007

	Balance at December 31, 2014
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents (1)	$	5,000	$	—	$	—	$	5,000
Promissory note	$	—	$	—	$	4,946	$	4,946
	$	5,000	$	—	$	4,946	$	9,946

(1) Comprises money market funds which are included in Cash and cash equivalents in the accompanying consolidated balance sheet.