Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Minimum annual rental commitments for operating leases of continuing operations having initial or remaining noncancellable lease terms in excess of one year are as follows (in thousands):

Years ending December 31,
2018	$	1,213
2019	1,369
2020	16
Total minimum lease payments	$	2,598

Net assets of IP Fund [Table Text Block]

At December 31, 2017 and 2016, the Acacia IP Fund net assets and net income (loss) were primarily comprised of the following (in thousands):

	2017		2016
Cash and other assets	$	986	$	1,118
Investments - noncurrent	1,905		2,933
Total assets	$	2,891	$	4,051
Accrued expenses and contributions	$	2,567	$	2,394
Net assets	$	324	$	1,657

	2017			2016
Revenues	$	—		$	16
Operating expenses	390			572
Loss from operations	(390		)	(556		)
Net loss in equity method investments	(943		)	(1,013		)
Net loss	$	(1,333	)	$	(1,569	)