Operating Segments - Segment Data from Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Operating loss	$ (4,754)	$ (5,069)	$ (9,634)	$ (10,308)
Other income (loss), net	(15)	1,452	(403)	31,826
Interest income	640	542	1,089	1,012
Equity loss	(13,765)	(3,175)	(22,427)	3,633
Net income (loss)	(19,022)	(7,348)	(33,625)	23,971
Segment assets	285,618		285,618		$ 318,454
Total Segments
Segment Reporting Information [Line Items]
Operating loss	0	0	0	0
Other income (loss), net	(72)	1,452	(311)	31,831
Interest income	0	0	0	0
Equity loss	(13,669)	(2,961)	(22,483)	4,076
Net income (loss)	(13,741)	(1,509)	(22,794)	35,907
Segment assets	168,246		168,246		150,700
Healthcare [Member]
Segment Reporting Information [Line Items]
Operating loss	0	0	0	0
Other income (loss), net	(72)	1,452	(311)	31,831
Interest income	0	0	0	0
Equity loss	(13,063)	(4,547)	(17,105)	6,075
Net income (loss)	(13,135)	(3,095)	(17,416)	37,906
Segment assets	60,571		60,571		62,292
Technology [Member]
Segment Reporting Information [Line Items]
Operating loss	0	0	0	0
Other income (loss), net	0	0	0	0
Interest income	0	0	0	0
Equity loss	(606)	1,586	(5,378)	(1,999)
Net income (loss)	(606)	1,586	(5,378)	(1,999)
Segment assets	107,675		107,675		88,408
Other Items [Member]
Segment Reporting Information [Line Items]
Operating loss	(4,754)	(5,069)	(9,634)	(10,308)
Other income (loss), net	57	0	(92)	(5)
Interest income	640	542	1,089	1,012
Equity loss	(96)	(214)	56	(443)
Net income (loss)	(5,281)	$ (5,839)	(10,831)	$ (11,936)
Segment assets	$ 117,372		$ 117,372		$ 167,754