Products, Major Customer, Concentration of Credit Risk Market Segment Breakdown (Tables)

12 Months Ended

Dec. 31, 2014

Market Segment Breakdown [Abstract]

Revenue from External Customers by Products and Services [Table Text Block]

	2014		2013		2012
Infusion therapy	$	215,982	$	220,982	$	226,092
Critical care	55,074		54,326		58,926
Oncology	36,949		37,075		29,957
Other	1,255		1,333		1,894
	$	309,260	$	313,716	$	316,869

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]

	As of December 31,
	2014		2013
Mexico	$	51,554	49,454
Slovakia	16,643		18,422
Italy	4,855		5,428
Germany	638		547
Total foreign	$	73,690	$	73,851
United States	151,024		139,150
Worldwide total	$	224,714	$	213,001