Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jan. 06, 2017	Dec. 31, 2016	Nov. 23, 2016
Assets:
Goodwill	$ 228,229		$ 208,431
DeWAL Industries LLC.
Assets:
Cash and cash equivalents				$ 1,539
Accounts receivable				7,513
Other current assets				691
Inventory				9,915
Property, plant & equipment				9,932
Intangible assets				73,500
Goodwill				35,755
Other long-term assets				101
Total assets				138,946
Liabilities:
Accounts payable				2,402
Other current liabilities				1,062
Total liabilities				3,464
Fair value of net assets acquired				$ 135,482
Diversified Silicone Products, Inc.
Assets:
Accounts receivable		$ 2,724
Prepaid expenses		21
Inventory		2,433
Property, plant & equipment		1,589
Intangible assets		35,860
Goodwill		17,793
Total assets		60,420
Liabilities:
Accounts payable		179
Accrued expenses		50
Total liabilities		229
Fair value of net assets acquired		$ 60,191