Annual report pursuant to Section 13 and 15(d)

Segment, Customer and Geographic Information (Detail)

v3.6.0.2
Segment, Customer and Geographic Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Segment Reporting Information [Line Items]      
Revenue $ 381,892 $ 375,865 $ 355,834
Long-lived assets 17,333 16,967
Neurology Products [Member]      
Segment Reporting Information [Line Items]      
Revenue 238,522 237,301 232,672
Neurology Products [Member] | Devices and Systems [Member]      
Segment Reporting Information [Line Items]      
Revenue 168,200 168,776 173,006
Neurology Products [Member] | Supplies [Member]      
Segment Reporting Information [Line Items]      
Revenue 58,681 60,205 59,666
Neurology Products [Member] | Services [Member]      
Segment Reporting Information [Line Items]      
Revenue 11,641 8,320 0
Newborn Care Products [Member]      
Segment Reporting Information [Line Items]      
Revenue 143,370 138,564 123,162
Newborn Care Products [Member] | Devices and Systems [Member]      
Segment Reporting Information [Line Items]      
Revenue 72,562 72,669 67,354
Newborn Care Products [Member] | Supplies [Member]      
Segment Reporting Information [Line Items]      
Revenue 47,674 49,982 48,697
Newborn Care Products [Member] | Services [Member]      
Segment Reporting Information [Line Items]      
Revenue 23,134 15,913 7,111
United States [Member]      
Segment Reporting Information [Line Items]      
Revenue 250,694 242,050 215,543
Long-lived assets 7,024 6,664
Foreign countries [Member]      
Segment Reporting Information [Line Items]      
Revenue 131,198 133,815 140,291
Canada [Member]      
Segment Reporting Information [Line Items]      
Long-lived assets 4,941 5,165
Ireland [Member]      
Segment Reporting Information [Line Items]      
Long-lived assets 2,530 1,651
Argentina [Member]      
Segment Reporting Information [Line Items]      
Long-lived assets 2,121 2,361
Other Foreign countries [Member]      
Segment Reporting Information [Line Items]      
Long-lived assets $ 717 $ 1,126