Discontinued Operations (Discontinued Operations: Revenue, Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating expenses:
Earnings from discontinued operations	$ 0	$ 625
BioSciences
Revenues:
Bioscience product sales and services		9,212
Cost of revenues:
Cost of bioscience product sales and services		3,340
Gross margin		5,872
Operating expenses:
Selling and marketing		3,210
Research and development		1,372
General and administrative		287
Restructuring costs		19
Total operating expenses		4,888
Earnings from discontinued operations		984
Other income, net		71
Earnings from discontinued operations before income taxes		1,055
Income tax expense		430
Earnings from discontinued operations		$ 625