Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

Three months ended March 31, 2022	U.S. Operations		Swiss Operations		Western European Operations		Chinese Operations		Other Operations		Total
Product Revenue	$	248,807	$	33,910	$	138,009	$	167,989	$	117,900	$	706,615
Service Revenue:
Point in time	60,154		7,168		36,223		10,327		28,600		142,472
Over time	16,860		2,192		18,654		4,390		6,608		48,704
Total	$	325,821	$	43,270	$	192,886	$	182,706	$	153,108	$	897,791

Three months ended March 31, 2021	U.S. Operations		Swiss Operations		Western European Operations		Chinese Operations		Other Operations		Total
Product Revenue	$	205,191	$	30,167	$	136,899	$	143,325	$	111,333	$	626,915
Service Revenue:
Point in time	51,591		6,891		35,630		9,342		27,877		131,331
Over time	15,177		2,223		19,821		3,407		5,516		46,144
Total	$	271,959	$	39,281	$	192,350	$	156,074	$	144,726	$	804,390

    A breakdown of net sales to external customers by geographic customer destination for the three months ended March 31 follows:

	2022		2021
Americas	$	352,689	$	303,339
Europe	249,784		241,377
Asia / Rest of World	295,318		259,674
Total	$	897,791	$	804,390

The Company's global revenue mix by product category is laboratory (57% of sales), industrial (38% of sales) and retail (5% of sales). The Company's product revenue by reportable segment is proportionately similar to the Company's global mix except the Company's Swiss Operations is largely comprised of laboratory products, while the Company's Chinese Operations has a slightly higher percentage of industrial products. A breakdown of the Company’s sales by product category for the three months ended March 31 follows:

	2022		2021
Laboratory	$	513,550	$	444,627
Industrial	343,738		310,777
Retail	40,503		48,986
Total	$	897,791	$	804,390