Operating Segments - Segment Data from Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Operating loss	$ (3,962)	$ (4,177)	$ (13,596)	$ (14,485)
Other income (loss), net	704	(246)	301	31,580
Equity loss	(7,635)	(8,962)	(30,062)	(5,329)
Net income (loss)	(11,628)	(14,006)	(45,253)	9,965
Segment assets	275,153		275,153		$ 318,454
Total Segments
Segment Reporting Information [Line Items]
Operating loss	0	0	0	0
Other income (loss), net	869	(8)	558	31,823
Equity loss	(7,547)	(8,843)	(30,030)	(4,767)
Net income (loss)	(6,678)	(8,851)	(29,472)	27,056
Segment assets	159,908		159,908		150,700
Healthcare [Member]
Segment Reporting Information [Line Items]
Operating loss	0	0	0	0
Other income (loss), net	869	(8)	558	31,823
Equity loss	(4,581)	(4,734)	(21,686)	1,341
Net income (loss)	(3,712)	(4,742)	(21,128)	33,164
Segment assets	48,463		48,463		62,292
Technology [Member]
Segment Reporting Information [Line Items]
Operating loss	0	0	0	0
Other income (loss), net	0	0	0	0
Equity loss	(2,966)	(4,109)	(8,344)	(6,108)
Net income (loss)	(2,966)	(4,109)	(8,344)	(6,108)
Segment assets	111,445		111,445		88,408
Other Items [Member]
Segment Reporting Information [Line Items]
Operating loss	(3,962)	(4,177)	(13,596)	(14,485)
Other income (loss), net	(165)	(238)	(257)	(243)
Equity loss	(88)	(119)	(32)	(562)
Net income (loss)	(4,950)	$ (5,155)	(15,781)	$ (17,091)
Segment assets	$ 115,245		$ 115,245		$ 167,754