Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 164,405	$ 185,255
Finished dosage form generic drugs
Disaggregation of Revenue [Line Items]
Revenues	69,213	95,561
Nutraceutical products
Disaggregation of Revenue [Line Items]
Revenues	11,633	10,454
Pharmaceutical intermediates
Disaggregation of Revenue [Line Items]
Revenues	10,222	10,136
Active pharmaceutical ingredients (APIs)
Disaggregation of Revenue [Line Items]
Revenues	28,626	26,440
Specialty chemicals
Disaggregation of Revenue [Line Items]
Revenues	36,221	34,020
Agricultural protection products
Disaggregation of Revenue [Line Items]
Revenues	8,490	8,644
Human Health
Disaggregation of Revenue [Line Items]
Revenues	80,846	106,015
Human Health | Finished dosage form generic drugs
Disaggregation of Revenue [Line Items]
Revenues	69,213	95,561
Human Health | Nutraceutical products
Disaggregation of Revenue [Line Items]
Revenues	11,633	10,454
Human Health | Pharmaceutical intermediates
Disaggregation of Revenue [Line Items]
Revenues	0	0
Human Health | Active pharmaceutical ingredients (APIs)
Disaggregation of Revenue [Line Items]
Revenues	0	0
Human Health | Specialty chemicals
Disaggregation of Revenue [Line Items]
Revenues	0	0
Human Health | Agricultural protection products
Disaggregation of Revenue [Line Items]
Revenues	0	0
Pharmaceutical Ingredients
Disaggregation of Revenue [Line Items]
Revenues	38,848	36,576
Pharmaceutical Ingredients | Finished dosage form generic drugs
Disaggregation of Revenue [Line Items]
Revenues	0	0
Pharmaceutical Ingredients | Nutraceutical products
Disaggregation of Revenue [Line Items]
Revenues	0	0
Pharmaceutical Ingredients | Pharmaceutical intermediates
Disaggregation of Revenue [Line Items]
Revenues	10,222	10,136
Pharmaceutical Ingredients | Active pharmaceutical ingredients (APIs)
Disaggregation of Revenue [Line Items]
Revenues	28,626	26,440
Pharmaceutical Ingredients | Specialty chemicals
Disaggregation of Revenue [Line Items]
Revenues	0	0
Pharmaceutical Ingredients | Agricultural protection products
Disaggregation of Revenue [Line Items]
Revenues	0	0
Performance Chemicals
Disaggregation of Revenue [Line Items]
Revenues	44,711	42,664
Performance Chemicals | Finished dosage form generic drugs
Disaggregation of Revenue [Line Items]
Revenues	0	0
Performance Chemicals | Nutraceutical products
Disaggregation of Revenue [Line Items]
Revenues	0	0
Performance Chemicals | Pharmaceutical intermediates
Disaggregation of Revenue [Line Items]
Revenues	0	0
Performance Chemicals | Active pharmaceutical ingredients (APIs)
Disaggregation of Revenue [Line Items]
Revenues	0	0
Performance Chemicals | Specialty chemicals
Disaggregation of Revenue [Line Items]
Revenues	36,221	34,020
Performance Chemicals | Agricultural protection products
Disaggregation of Revenue [Line Items]
Revenues	$ 8,490	$ 8,644